The Pearl Protectors

The Gardens Under the Sea: How Simple Grass Could Save Sri Lanka’s Fishermen and Fight Climate Change

The Pearl Protectors — Sun, 12 Jul 2026 20:27:00 +0000

By: Rukmi Peiris

A Hidden World

Sail just a few meters away from the coast of Sri Lanka, and the blue water below looks deep, ordinary and empty. But beneath that surface, there is something that worth our attention. It is neither full of different colors nor build of corals. It is seagrass meadows or the ‘Gardens Under the Sea’, green, gentle, swaying with the ocean currents like grass in a field dancing in the wind. And it may be one of the most important treasures in the sea that we have largely ignored.

What is Seagrass?

Seagrass is heralded as the only flowering plant capable of growing in saltwater, complete with roots, leaves, seeds, and flowers. Even though thrive beneath the waves, it functions much like the grass in our gardens. Seagrasses are also known as the “Lungs of the Sea” due to its ability to produce up to 10 liters of oxygen per square meter each day through photosynthesis.

For years, seagrass has flourished along Sri Lanka’s coastline silently. Marine species rely on it; some make it their shelter while some make it their food source. Fish hides among its leaves, turtles graze on it. Yet most of us do not properly aware about its’ existence. Now, scientists are turning their attention to these meadows and their findings are remarkably.

A Nursery for Fish

Imaging a bustling city without any buildings or homes, where all the people wander openly, expose to danger. That is what the ocean would be like without seagrass. Baby fish, prawns, crabs, even juvenile sharks need places to hide from predators. They need food while they seek cover. Seagrass fields can provide them all. When these young creatures grow, they swim out to the sea and eventually return to the nets of fishermen. Without sea grass, there would be fewer fish, fewer options for fishers, and ultimately, lower incomes. So, naturally, seagrass is not just a grass, but a nursery that helps fill our dinner plates.

The Climate Hero You Never Heard Of

We are all familiar with the concept of “Plant a tree. Save the planet.” That holds true, but seagrass does something even greater. Despite covering only about 0.2% of the ocean floor, seagrass captures carbon; the primary drive of global warming, at a rate over 30 times faster than a rainforest. Yes, a forest beneath the sea works harder than a forest on land.

Moreover, unlike trees, seagrass stores that carbon deep in the sediment, locking it away for centuries. It accounts that approximately 10% of the carbon buried in ocean sediment annually. Scientists call this trapped carbon as “Blue carbon”. Along the coastline of Sri Lanka, vast quantities of these heroes are quietly at work.

What Is Happening to the Meadows?

It is estimated that nearly 29% of the world’s seagrass has been lost since the 1880s. In Sri Lanka, the current rate of decline is estimated at 1-2% per year. For example, the seagrasses ecosystems in the northern, eastern and western parts of the Negombo Lagoon declined by an estimated 96% between 1997 and 2004.

Recent studies indicate that this downward trend is accelerating largely, due to human activities such as boats dredging for prawn farms and the disposal of urban waste into the ocean water. Some of these activities even block sunlight from reaching the sea bed, hindering photosynthesis and threatening the survival of seagrass.

The consequences are twofold. First, fish population will gradually decrease, leaving fishermen with smaller catches and low incomes. Second, all the stored blue carbon will escape back into the atmosphere, turning the former ally against climate change into a contributor to the very problem it once helped mitigate.

A New Idea : Paying to Protect

There is an idea that is not new to the world, but relatively new to Sri Lanka. It is Blue Carbon Credits. Under this model, companies pay local communities to protect seagrass meadows, offsetting the environmental damage they are cause. As a result, seagrass habitat will be preserved, carbon will be captured, companies will meet their sustainability goals and local community will receive compensation for safeguarding these vital ecosystems.

In Sri Lanka, researchers are already mapping the seagrass along the coast, counting fish and measuring carbon stocks, while engaging with fishing communities. There were previous projects, particularly focused on mangroves. However, they were put on hold due to a lack of clear authorization processes, benefit sharing agreements and regulatory frameworks surrounding carbon rights. If these challenges can be overcome, a coastal village might earn a tangible income simply by protecting the seagrass in their area, rather than destroying it.

What We Can Do?

We do not have to be a scientist to make a difference. Simply search, read and share this story. The Garden Under the Sea have been silently protecting us for so long; now it is our turn to protect them. The survival of seagrass means the survival of marine life, and along with it, the livelihood of fishermen. And our Pearl Island will breathe a little easier.

Feature Image Credits: https://news.mongabay.com/ – A healthy seagrass meadow in northern Sri Lanka.

What About Us? The Ocean’s Silent Cry in Times of War

The Pearl Protectors — Thu, 09 Jul 2026 19:44:00 +0000

By: Saduni Rukshala

Wars are often remembered for the lives lost, destruction of nations and economic damage they leave behind. Yet beneath the surface of the ocean, other victims, without a voice, suffer silently, often overlooked in the aftermath of human conflicts. Marine ecosystems continue to become invisible casualties of modern warfare. From oil spills and underwater explosions to chemical contamination and noise pollution, conflict leaves long-lasting scars on oceans that can take decades to recover.

One of the most extreme examples of human impact on marine environments is underwater nuclear testing conducted during the Cold War (1945 – 1991). These tests, carried out primarily by the United States and the Soviet Union, were later restricted under the Partial Test Ban Treaty, but not before causing lasting damage beneath the ocean’s surface. The detonation of nuclear devices underwater generates intense shockwaves and radiation, resulting in immediate and widespread destruction of marine life. Fish, marine mammals and other organisms within the blast radius are often killed instantly due to extreme pressure and heat. Coral reefs and other critical habitats are highly vulnerable, leading to long-term disruption of ecosystems that depend on them for shelter, breeding and food. Radioactive materials released into the ocean are carried by currents, spreading contamination across vast areas. These substances can enter marine food chains, accumulating in organisms from plankton to larger fish and eventually reaching humans through seafood consumption. Over time, this can result in genetic mutations, reproductive issues and long-term declines in biodiversity, with lasting effects on marine ecosystems.

Another severe example of war-driven marine destruction occurred during the Gulf War (1990–1991). As Iraqi forces retreated from Kuwait, an estimated 6 to 8 million barrels of oil were intentionally discharged into the Persian Gulf, creating one of the largest oil spills in history. Thick layers of oil spread across coastal waters, smothering coral reefs and salt-tolerant mangrove ecosystems along the shoreline. These mangroves, unlike the dense tropical forests seen in Sri Lanka, are adapted to survive in extreme salinity and heat. Yet, they quietly stand as vital breeding and nursery grounds for marine life in an otherwise harsh environment. Fisheries and turtle nesting grounds were also severely affected. Marine life, already vulnerable, was forced to struggle for survival as toxic substances stripped oxygen from the water and poisoned the food chains on which they depend on. Even years later, the sea carries the memory of this destruction, with traces of damage lingering in coastal sediments and fragile marine habitats.

Modern military activity in the Black and Azov Seas as part of the ongoing Russia–Ukraine War (2022–present) continues to threaten already struggling marine ecosystems affected by pollution and ecological stress. Coastal reserves, seagrass meadows, lagoons, and protected marine habitats have faced destruction due to shelling, fires, naval activity, and military infrastructure. Scientists have also reported mass dolphin deaths along the coasts of Ukraine, Turkey, Bulgaria, and Romania, with concerns that continuous underwater explosions and military sonar may be disrupting marine mammals’ hearing, navigation, and communication systems. Damage to ports, sewage facilities, and industrial infrastructure has further increased the risk of toxic pollution entering the sea. Unlike destruction on land, the full environmental consequences beneath the water remain difficult to measure, leaving much of the damage unseen and untreated by the world.

Recent tensions surrounding the Strait of Hormuz further highlight the environmental risks associated with conflict in strategic maritime regions. The strait, one of the world’s most important oil shipping routes, carries a significant portion of global energy trade between the Persian Gulf and the open ocean. Although diplomatic efforts have helped ease hostilities, the situation remains fragile, with ongoing tensions continuing to threaten the region’s marine environment. The strait is home to coral reefs, seagrass beds, sea turtles, dugongs and the rare Arabian humpback whale. Increased military activity and heavy tanker traffic place additional pressure on these already sensitive environments, where even a single accident can disrupt entire food chains.

Dugongs depend entirely on shallow seagrass habitats for survival and are highly sensitive to habitat loss and disturbance. Whales and dolphins in the region also rely heavily on sound for communication and navigation, making them particularly vulnerable to underwater noise from vessels and military activity. Even small changes in their environment can affect feeding, migration and breeding patterns, showing how fragile marine life becomes in areas of strategic conflict. Even though these threats are usually linked to faraway maritime routes, the oceans are all connected. Issues that begin in one region can travel across waters. This was seen in more recent events closer to home.

In March this year, approximately 19 nautical miles off Sri Lanka’s southern coast, the Iranian warship IRIS Dena was struck by a torpedo from a United States submarine while operating in the region. The sinking occurred relatively close to Sri Lanka’s maritime zone, urging monitoring and response efforts from local authorities and regional partners. In the days that followed, reports of oil patches, floating debris and possible fuel leakage raised concerns along sections of the southern coast, including areas such as Hikkaduwa, which is well known for coral reefs, fisheries and tourism. Although the full environmental impact remains unclear, the incident highlighted how quickly distant geopolitical tensions can translate into potential risks for Sri Lanka’s marine ecosystems and coastal livelihoods.

Across different regions and conflicts, a clear pattern emerges: the oceans bear the consequences of war in ways that are often invisible at first glance. From oil-covered coastlines to disturbed marine ecosystems in strategic waterways, the sea becomes a silent record of human conflict. Unlike destruction on land, these impacts unfold slowly beneath the surface, often going unnoticed by the wider world. In these waters, marine life continues to struggle without recognition, reminding us that the cost of war extends far beyond human boundaries.

This lack of visibility reflects a broader pattern in what tends to receive attention in the information that is consumed, especially in times of crisis. Human loss, buildings, and political outcomes often dominate focus, while the impact on marine ecosystems and wildlife remains in the background. As a result, much of the damage beneath the surface, in oceans and across nature, continues to go unnoticed even when it is severe and long-lasting.
Feature Image Credits: https://www.nbcnews.com/ – A Russian soldier plays with a bottlenose dolphin at the dolphinarium in Kherson, Ukraine, on May 4.

The Coral Kingdom Next Door: Why a Distant Triangle Matters to Sri Lanka

The Pearl Protectors — Sun, 28 Jun 2026 20:51:00 +0000

By: Rukmi Peiris

Coral Triangle Day is celebrated in June around the world. But you may be wondering why this day matters to us when the Coral Triangle is located far from Sri Lanka. The Coral Triangle refers to a vast marine region in the Indo-Pacific, covering Indonesia, Malaysia, the Philippines, Papua New Guinea, the Solomon Islands, and Timor-Leste.

Imagine a busy, colorful, crowded big city beneath the wave. This is what the Coral Triangle looks like, covering approximately 2.3 million square miles (6 million square kilometers) of the ocean. Filled with extraordinary biodiversity, it is home to over 600 coral species, around 2,200 fish species and 6 out of 7 sea turtle species. It is often referred to as ‘the Amazon Rainforest of the sea’. This region supports the livelihoods of over 120 million people, both economically and ecologically. However, this marine habitat also faces significant threats from climate change and human activities, including pollution, destructive fishing practices, and overfishing, all of which are harmful to ocean resources.

But why should we care? Because the ocean does not have boundaries. Whether fish migrate or ocean currents circulate, everything is interconnected across the world’s seas. Although Sri Lanka lies outside the Coral Triangle, the oceans link us to this extraordinary marine ecosystem. Ultimately, the health of that distant Triangle is closely tied to the health of our own shores. Remember, in Sri Lanka we also have our very own underwater treasures that deserve the same attention and care, even if they are not as large as the Coral Triangle.

Whether in the Coral Triangle or around Sri Lanka, coral reefs face many of the same challenges. Coral bleaching due to rising sea temperatures is one of these issues. In the years 1998 and 2016, El Niño events caused severe coral bleaching around Sri Lanka. And the Coral Triangle faces it quite frequently. Another major threat is plastic pollution. Releasing plastic waste into the marine environment smothers corals and other organisms, disrupting their activities. This can block sunlight from reaching marine organisms and interfere with photosynthesis and other metabolic activities. In some places, fishermen use explosives or cyanide to catch fish. However, these harmful practices damage not only fish populations but also coral reefs for decades. Beyond these, tourism can also negatively impact coral reefs. Even well-meaning people can accidentally break corals. One careless step can destroy a living structure that took decades to grow.

However, the positive news is that Sri Lankan scientists are monitoring our corals closely. Places such as the Hikkaduwa Coral Garden Sanctuary are protected with the support of nearby hotels and local communities. Many fishers are adopting more sustainable fishing practices. They avoid sensitive reef areas and refrain from using gear that damages the seabed. Illegal activities are being reported. Young Sri Lankans are volunteering to do cleanup dives. They remove abandoned fishing gear, including ghost nets, it and hand it over to recycling facilities.

So, what does Coral Triangle Day remind us of ? If we go for a swim or a snorkel near corals, let’s make sure to keep our distance. Let’s not take corals home as a souvenir or stand on coral reefs. Just observe and leave them undisturbed. If we are using sunscreen, let’s use mineral-based sunscreens containing zinc or titanium instead of chemicals that are harmful to corals. Let’s learn about sustainable seafood choices and the important roles different fish species play in maintaining healthy reef ecosystems. Make sure to spread the word about why the Coral Triangle matters.

The world has already lost 30-50% of coral cover, and alarming 75%-77% of coral reefs have been affected by bleaching level heat stress, pollution, overfishing and other human-driven activities. However, many coral reefs persist because they are resilient ecosystems. Corals are tough. They have survived many crises over millions of years, whether it was storms, volcanic activities or ice ages. If we protect them and give them the opportunity to recover, coral reefs can regenerate over time. They may not return exactly to their previous state, but recovery is still possible.

The Coral Triangle Day is not just for the people of Indonesia, the Philippines or the Solomon Islands. It is for all the people who love and care for the ocean. The Coral Triangle may be far away, but its health matters far beyond its borders. Protecting corals anywhere means protecting their future and the health of coastlines worldwide, including our own.

Feature Image Credit: divevolkdiving.com

Sea Sand Dredging and Coastal Erosion: Who Is Accelerating Sri Lanka’s Disappearing Beaches

The Pearl Protectors — Fri, 26 Jun 2026 07:33:53 +0000

By: Moira Alfred

Sri Lanka has a coastline of approximately 1600 kilometers where about one-third of Sri Lanka’s population lives. As of late, natural and man-made phenomena have heightened coastal erosion, causing danger and environmental degradation along many coastlines. Recent studies indicate that approximately 62.6% of the shoreline experienced significant erosion, while 36.9% witnessed gradual accretion. The beaches are disappearing and the culprits are not hard to identify.

Sand mining stands at the center of the crisis. The Colombo International Financial City, commonly known as the Colombo Port City, built on 269 hectares of land reclaimed from the sea in 2016, utilized 65 million cubic meters of sand. Sand was dredged from about 3 to 4 kilometers offshore, creating a sedimentation vacuum on the sea bottom that needs to be filled over time by sediment or sand moving into that area. This causes sand that should replenish the beaches to instead fill the dredged vacuum, leading to beach sand depletion. The result is visible along Colombo’s beaches, Mount Lavinia and stretches south to Panadura, where residents have watched the shoreline retreat year after year.

Residents in areas like the Negombo-Pitipana coastal belt in Morawala, Udappuwa in Puttalam, Calido Beach in Kalutara and the coastal belt in Mount Lavinia, Dehiwala and Ratmalana have been left unsafe and destitute after their houses and properties were washed away by the sea. The loss is not just environmental. Tourism, a pillar of the national economy, depends on pristine beaches. As the sand disappears, so does the economic foundation of coastal communities.

River sand mining adds another layer of destruction. River sand mining has been an illegal money-spinning business filling the pockets of politicians and many other stakeholders in related industries. Rivers like the Maha Oya and Deduru Oya have been exploited for decades to meet construction demand. The Geological Survey and Mines Bureau issues permit that specify extraction limits, but enforcement is weak and illegal mining is rampant. When transport permits were suspended by a previous government, control evaporated entirely. Trucks moved sand without restriction, roads deteriorated underweight, and nobody tracked how much was being taken or from where.

The mechanisms are well understood. Sand moves along the coast through longshore drift, a natural process governed by waves and currents. When sand is extracted offshore or rivers are dammed or mined, the supply chain breaks. Beaches depend on constant replenishment from rivers and offshore sources. Remove the supply and erosion accelerates. Beach nourishment projects at Port City and Mount Lavinia, where sand was dredged from Angulana, along with other coastal constructions requiring sand, have contributed to erosion. Efforts to restore one beach often degrade to another.

Regulation exists but lacks teeth. The Coast Conservation Department permits offshore mining only if conducted 3 kilometers offshore and from depths exceeding 15 meters. In practice, monitoring is inadequate and violations go unpunished. The economic incentives are too strong. Construction booms, port expansions and land reclamation projects create insatiable demand for sand. Legal and illegal operators meet that demand with little regard for long-term consequences.

Certain areas including Vankalai, Naruvilikulam and Kondachchikudah were identified as high-risk zones prone to erosion, with maximum erosion rates reaching 4.7 to 5.3 meters per year. In some villages, up to 10 meters of land is lost annually. Fishermen lose access to launching sites. Hotels watch the sea advance toward their foundations. Families abandon homes that stood for generations.

Efforts to address coastal erosion have focused on hard engineering solutions like breakwaters and seawalls, which often shift erosion elsewhere rather than solving it. The first beach nourishment project in Sri Lanka was carried out in 2012 over a 1.8-kilometer stretch in the Uswetakeiyawa area by the Coast Conservation Department. About 300,000 cubic meters of offshore sand in the Indian Ocean was pumped using a dredging vessel for the nourishment. Three breakwaters were constructed afterward. The results have been mixed. Sand accretes in some areas and erodes in others, and the fundamental problem of sand supply deficit remains unresolved.

The political will to confront sand mining interests is absent. Too many people profit from the status quo. Politicians receive contributions, contractors win lucrative contracts and enforcement officials look the other way. Meanwhile, the coastline shrinks, beaches vanish and coastal communities pay the price. This is not a crisis of knowledge. Science is clear. This is a crisis of governance, economic priorities and the willingness to regulate an industry that operates with near impunity. The beaches are disappearing and everyone knows why.

Feature Image Credits : thehindu.com

From river to sea: How Sri Lanka’s waterways pollute the coast

The Pearl Protectors — Sun, 14 Jun 2026 20:34:00 +0000

By: Aathirai Elankovan

Marine pollution has always been perceived by the general public as an issue that begins at the sea, and we see this as a result of coastal dumping, oil spills and shipping waste. While community groups and non-governmental organisations focused on coastal restoration continue to organise efforts such as beach clean ups and recycling workshops which have had a measurable impact, it is noteworthy that such efforts fail to target or address the main cause for such pollution. Studies have shown that only 10% of marine pollution is accounted for by activities at sea, whereas the remaining 90% originates on land and is carried by the vast network of rivers existing in Sri Lanka.

Historically Sri Lanka’s rivers have proven to sustain human agriculture, ecosystems, and shape our lifestyle while carrying cultural significance. But now they have also become major pathways for plastic pollution and waste. What begins as simple waste discarded miles off the coast, now often ends up in the Indian Ocean. The Kelani River, according to the CEA (Central Environmental Authority), is not only the second largest water shed but the most polluted river in Sri Lanka. A past survey indicates that Mattakuliya coastal area receives both liquid and solid waste primarily from the Kelani River estuary and the Mutwal sea outfall. Here the Kelani river acts as a prominent pathway by carrying nitrate rich agricultural runoff from upstream. In addition, Mutuwal sea outfall directly discharges wastewater to the coastal zone. Together these sources contribute to elevated nitrate concentrations in the coastal waters of Mattakuliya.

Another such example is Koddiyar Bay in Trincomalee, located on Sri Lanka’s eastern coast, which also faces increasing contamination due to the discharge from Mahaweli River, the country’s longest river. Waste generated in upstream catchment areas, particularly in the hill country including non-biodegradable materials such as polythene plastics and electronic waste is transported downstream through the river system. This eventually contributes towards the degradation of the marine environment in and around Koddiyar Bay.

The bottom line is that both the environment and communities living on the coast must bear the cost. Impacts include algal blooms (eutrophication) in lagoons and waterways surrounding the coast, which is caused by the release of agro chemicals and other inorganic materials. Coral reefs and other aquatic life stress due to such changes, causing large population declines. Daily livelihoods of fishermen are affected, and coastal tourism activities face a decline, leading to economic challenges. These impacts are intensified by a changing climate and other risks like flood driven pollution.

As an island nation, Sri Lanka cannot afford to treat marine pollution as a problem that begins only at the shoreline. Our vast network of waterways and rivers move through our urban and suburban landscapes. By recognizing them as sources of the problem, we can potentially utilise them to be part of a solution.
Feature Image Credit: norwegianscitechnews

Sewage Disposal into the Ocean: The Silent Crisis Along Sri Lanka’s Urban Coastlines

The Pearl Protectors — Mon, 01 Jun 2026 06:20:21 +0000

By: Moira Alfred

In Colombo, 90% of the sewerage infrastructure is over a century old. Every day, more than 100,000 cubic meters of untreated sewage get pumped into the ocean through two outfall pipes that extend about 1.5 kilometers offshore. The system was built between 1896 and 1920. It’s falling apart, but the sewage keeps flowing.

More than 80% of the city is connected to a network of over 250 kilometers of sewer pipes feeding into 13 pumping stations. Those stations channel wastewater to two deep-sea outfalls at Mutwal and Wellawatte, dumping roughly 30 million gallons of sewage into the ocean daily. The pipes crack, leak and occasionally collapse underground where nobody notices until a road caves in. Officials admit the system is failing but say rebuilding it isn’t practical. There’s no space, and the sewage has to go somewhere while construction happens.

The rest of the country isn’t doing much better. According to the UN Joint Monitoring Program, less than 3% of rural households and only 12% of urban households discharge wastewater into sewers. The overwhelming majority, 95% countrywide, use septic tanks. The waste sits in below-ground storage until a gulley-bowser truck comes to pump it out. But there are only about 20 fecal sludge treatment plants in the entire country, many of them too far away to be practical. Hauling sludge long distances costs money, so illegal dumping happens. In Colombo, most of the sludge just gets discharged into the sewer system, which dumps it straight into the ocean.

The contamination is measurable. Studies found severe fecal pollution along the west coast from Negombo down to Mirissa, driven by direct sewage disposal and runoff from hotels and homes. Fecal coliform bacteria showed up in practically every coastal waterway tested. Pathogenic Salmonella bacteria were detected in the Dehiwala canal and Rathmalana areas. This isn’t theoretical. The water is contaminated.

The Negombo lagoon illustrates the problem. It’s an important ecological and economic resource just north of Colombo, but it’s also a dumping ground. Local settlements, municipal sewage and the tourist industry all contribute wastewater. Studies estimate that nearly 250 kilograms of raw feces get released into the lagoon every day through drainage channels. About half of the solid waste generated nearby isn’t even collected, it just gets dumped illegally into the surrounding environment. Testing at seven sewage entry points found that the northern part of the lagoon exceeds safe coliform thresholds for both swimming and seafood consumption. E. coli is present. People swim there anyway. They eat oysters harvested from those waters.

The public health implications are direct. Fecal contamination leads to gastroenteritis and other waterborne diseases. Yet Sri Lanka has no regulatory framework for monitoring bathing sites like Mount Lavinia beach despite the documented pollution. People just assume the water is fine because it looks clear.

More than 60% of Sri Lanka’s industrial enterprises are located along the coast. Many of them discharge effluents directly into the sea with little or no treatment. The Western and Southern provinces, home to over 40% of the population, pack fisheries, tourism operations, hotels, restaurants and commercial businesses along a coastline that’s steadily degrading. The tourism industry markets pristine beaches while simultaneously contributing to their contamination through unregulated wastewater discharge. The contradiction doesn’t seem to bother anyone in charge.

Attempts to fix the problem have gone nowhere. The Greater Colombo Wastewater Management Project launched in 2010 with financing from the Asian Development Bank. The goal was to upgrade infrastructure and improve services for 838,000 residents. Implementation has been slow. Contracts have stalled. The fundamental problem persists. Colombo Municipal Council officials acknowledge the system is old and failing but say the constraints are too complex to overcome.

This isn’t just an environmental issue. It’s economic. The fishing industry depends on clean water. Tourism depends on clean beaches. Both are being undermined by the same sewage that nobody wants to talk about. It’s a public health crisis exposing millions to disease. And it’s a governance failure reflecting decades of inadequate investment and absent regulation. Invisible infrastructure doesn’t win elections, so it doesn’t get funded.

The sewage flows every day. The pipes keep cracking. The treatment plants that should exist don’t. The regulations that could stop illegal dumping aren’t enforced. And the coastal waters that millions depend on are quietly becoming contaminated. This crisis doesn’t announce itself with sirens or headlines. It’s slow, silent and already here.
Feature Image Credits : vertexeng.com

The journey of sea turtles along Sri Lanka’s shores

The Pearl Protectors — Mon, 25 May 2026 07:53:25 +0000

By : Aamina Gaffoor

Along the golden coastlines of Sri Lanka, a quiet yet extraordinary journey unfolds beneath the moonlight. Each year, sea turtles return to the very beaches where they were born, guided by instinct. After travelling thousands of kilometres across vast oceans, they arrive at these familiar shores to begin another cycle of life. However, this remarkable natural phenomenon is increasingly under threat in today’s rapidly changing world.

Sri Lanka is home to five of the world’s seven species of sea turtles: the Green Turtle, Hawksbill Turtle, Loggerhead Turtle, Olive Ridley, and the majestic Leatherback. These ancient mariners have existed for millions of years, surviving immense environmental changes. Yet today, they face challenges unlike ever before. Their long migratory journeys across the Indian Ocean are fraught with danger, but their instinct to return to Sri Lanka’s shores remains unwavering. Beaches such as Kosgoda and Rekawa have become vital nesting grounds, where turtles come ashore under the cover of darkness to lay their eggs.

The nesting process itself is both delicate and fascinating. Female turtles carefully select suitable sites, digging deep nests in the sand where they lay around 100 eggs at a time. Once completed, they gently cover the nest, concealing it from potential predators before slowly returning to the ocean. Weeks later, the beach comes alive as tiny hatchlings emerge from beneath the sand. Guided by the natural glow of the horizon, they instinctively move towards the sea. Yet this journey is perilous, and only a small fraction survives, facing predators, exhaustion, and environmental obstacles from the moment they are born.

Today, these remarkable creatures are increasingly at risk due to human activity. Coastal development has reduced the availability of safe nesting sites, destroying and disrupting natural habitats. Meanwhile, ocean pollution, particularly plastic waste, poses a silent but deadly threat. Turtles often mistake plastic bags for jellyfish, one of their primary food sources. When ingested, plastic can cause severe internal blockages and toxic poisoning, which are often fatal. In some areas, eggs continue to be illegally poached, further threatening future populations.

Artificial lighting along beaches presents another critical challenge. Hatchlings rely on the natural light of the horizon to guide them to the sea. However, lights from hotels, streets, and buildings disorient them, leading them inland instead. This confusion makes them more vulnerable to dehydration, predation, and death. What may seem like a minor human convenience can have devastating consequences for these fragile creatures.

Climate change further intensifies these threats. Rising global temperatures affect the sand in which eggs incubate, and this temperature determines the sex of hatchlings. Warmer sand produces more females, potentially creating long-term population imbalances. In addition, rising sea levels and increasingly intense coastal storms wash away nests before eggs can hatch, reducing the number of turtles that successfully reach the ocean each year.

Despite these challenges, there is hope. Conservation efforts across Sri Lanka are making a meaningful impact. Turtle hatcheries have been established to protect eggs from predators and human interference, increasing the chances of survival for hatchlings. Community-led initiatives are also playing a vital role. Many coastal communities that once relied on turtle eggs for income are now actively engaged in conservation, helping to protect nesting sites and raising awareness about the importance of these species.

The journey of sea turtles along Sri Lanka’s shores is a powerful reminder of nature’s resilience. It also highlights the delicate balance between human activity and the natural world. Protecting these creatures is not merely about saving a single species; it is about preserving the health of our oceans and safeguarding biodiversity for future generations.

Each of us has a role to play. Simple actions, such as reducing plastic use, supporting conservation efforts, and spreading awareness, can collectively make a significant difference. The survival of sea turtles depends not only on large-scale initiatives but also on the everyday choices we make. If we fail to protect these extraordinary creatures today, their ancient journeys may one day come to an end. However, with collective effort, we can ensure that future generations continue to witness this remarkable cycle of life.
Feature Image Credits : theguardian.com

Kalpitiya Peninsula’s Plastic Problem

The Pearl Protectors — Sun, 17 May 2026 19:30:00 +0000

By: Olivia Neilson

Travel writing on the Kalpitiya Peninsula promises a “sandy, palm tree paradise”, sheltered from the rapidly developing tourism of Sri Lanka’s Southern beaches. The guidebooks highlight the area’s rich marine biodiversity, with Sri Lanka’s biggest coral reef (Bar Reef), and dolphin and whale watching which beats the crowds. The Kalpitiya Peninsula has all of this, but there is one thing the guidebooks don’t tell you. Plastic pollution is rife in the area. In between spotting whales, groups of spinner dolphins, a turtle, and even a ray on a morning boat ride, plastic bottles floated about as stark reminders of the human impact on marine life. The high winds in the peninsula might attract world class kitesurfing, but they also put the world’s plastic problem in plain sight. A beach in Kudawa is littered as far as the eye can see with plastic. The beach resembles more of a dumping ground than a natural habitat. And then there are the micro-plastics, the inconspicuous nurdles that litter the shores and leave “severe and long-lasting consequences for ecosystems, fishing industries, and coastal communities.” Dozens of government-paid workers sieve the beach in Kappalady, attempting to mitigate the tiny toxic nightmare for marine life.

In an eco-friendly beach resort called Elements in Kappalady, guests are encouraged to help with the daily beach cleans. It’s easy to fill up a huge bag of plastic within a few hundred meters on the beach. Every morning the staff go out, every night more plastic is blown across. “It’s all about consumption”, says Sylvie, one of the owners of Elements. Sylvie passionately tells me the world’s over consumption is at the heart of the problem. They can keep doing beach cleans, but more needs to be done to tackle the root cause. But whilst our conversation starts from a feeling of helplessness, of plastic drifting over from India and the world’s obsession with fast fashion and plastic wrapped goods, Sylvie stays hopeful. “We have to start with ourselves,” she tells me. Elements uses charcoal to filter the drinking water and stay plastic free in the rooms and restaurant. Whilst there can be a distrust of unbottled water, due to local issues with waste management and water supplies, Sylvie and husband Marcel show that an eco-friendly hotel is possible. They run sustainability workshops with their staff, and would like to raise more awareness within the community of the changes we can make as individuals which can have a positive impact on the planet.

With dolphin watching boat tours in the Peninsular attracting more and more tourists, Ukrainian artist couple Dina Dubrovnik and Kay Artishock, wanted to draw attention to the negligence of tourists who leave their plastic behind afterwards. In 2018, they created a Trash Dolphin sculpture from local beach cleanups. Local fishermen who helped with the sculpture commented, “Sadly most of the time it is our local tourists from all over Sri Lanka who throw their garbage on our beaches after their dolphin watching trips.” As well as plastic waste, ghost nets (deadly discarded fishing gear) are also a huge problem for marine life. As the WWF state in an article from 2019, “Ghost nets don’t only catch fish; they entangle sea turtles, dolphins and porpoises, birds, sharks, seals and more […] And ghost nets harm coral reefs too – breaking corals, exposing them to disease, and even blocking the reeds from needed sunlight.” Washed up fishing nets can be seen on the shores of the Kalpitiya peninsula, but the ghost nets are also sadly found in Bar Reef. Last year, a huge amount of ex-fishing debris was found there. The problem is not going away.

Sylvie and Marcel remarked they had seen noticeable bleaching in Bar Reef in the past eight years. Sylvie showed me a video of the reef her friend had made whilst diving, “there’s nothing left,” she lamented. Whilst Sri Lanka’s rich marine life is a huge draw for visitors from all over the world, there is a deep irony to eco-tourism which can do more to harm marine life than protect them. From the diesel chugging boats and plastic bottles on dolphin watching tours to the plastic straws poking out of King coconuts. But the plastic problem on the beaches in the Kalpitiya Peninsula is a fierce reminder that it all starts with our own habits and decisions, and thanks to eco-friendly resorts like Elements, being a plastic-free tourist is possible.
Feature Image Credit: travel2unlimited.com

Silent of Heatwaves: How Rising Ocean Temperatures are Reshaping Marine Eco-Systems

The Pearl Protectors — Sun, 03 May 2026 20:25:00 +0000

By: Thusitha Bulathgama

While the world watches rising temperatures in land, a more dangerous heatwaves is unfolding beneath the ocean’s surface. Marine heatwaves are defined by the duration and intensity of abnormally high ocean temperatures. Sea surface temperatures is one of the most common methods used by scientists to measure ocean warming. These heatwaves are often caused by hot, dry and windless weather conditions that prevent warmer surface water from mixing with cooler water below. When warm sea surface temperatures persists for at least five days and exceed a threshold beyond the normal range, they are classified as marine heatwaves. During El Niño years, when excessive heat and dry conditions continue, marine heatwaves are more likely to occur. This issue should not be ignored, as the Intergovernmental Panel on Climate Change states that since 1970s, human activity has been the primary cause of rising ocean temperatures. Therefore, as human we must pay greater attention and take immediate action to address this issue.

Marine heat waves have severe impacts on marine life. Many of the heat waves that caused extensive coral bleaching and reef deterioration occurred between 2006 and 2015. In 2021, marine heat waves affected nearly 60% of the world’s ocean surface at least one. According to the United Nations Environment Program, if ocean continues to warm, all of the world’s coral reefs could bleach by the end of the century. In addition, heat waves slow the growth of some species, active deadly viruses in infected oysters, and stress mobile spices such as shellfish, oysters and abalone. Marine heatwaves place immense pressure on marine ecosystems, causing coral bleaching and mass deaths fish, marine mammal and seabirds. They can also intensify hurricanes and toxic algal blooms. The duration, timing and depth of temperature changes are key factors that determine how severe these effects are in different regions. Marine heatwaves also leads to instability in the food chain, where smaller species may grow out of control while predators lose their prey. For instance, many marine organisms lose their habitats and breeding grounds due to the decline of key species such as coral reefs. As result, the structure and function of marine ecosystems begin to change, leading to long-term instability. These cascading effects demonstrate that rising ocean temperatures are not isolated events but powerful forces reshaping life beneath the surface.

In the Sri Lankan context, one of the biggest threats facing coral reef is rising ocean temperature. As mentioned, coral reefs are highly sensitive to environmental changes, and when there is a increases in temperature can severely impact their health. Additionally, the country has experienced repeated coral bleaching incidents, particularly during global climate anomalies such as El Niño in 1998, 2016 and more recently 2024, highlighting a troubling trend of increasing marine heatwaves. Such as events not only reduce biodiversity but also disrupt coastal livelihoods that depend on healthy reef ecosystems. Moreover, marine ecosystems in Sri Lanka remain under stress due to the combined effects of ocean warming and acidification which slow recovery rates. This reflects broader global patterns of ocean-driven ecological transformation. If these trends continues, the long-term sustainability of Sri Lanka’s marine biodiversity and fisheries sector will be at significant risk.

In conclusion, marine heatwaves are changing ocean ecosystems in significant and concerning ways. The impacts extend far beyond individual species and threaten the overall balance of marine life, from coral bleaching to disrupted food webs. As climate change intensifies, these hidden changes will have serious effects on biodiversity, fisheries and human livelihoods. The future of our seas depends on consistent and immediate action to address rising global temperatures, making it critical to recognize the urgency of this issue.
Featured Image Credits : www.ccwa

The Nets Changing Our Seas

The Pearl Protectors — Sun, 19 Apr 2026 20:06:00 +0000

By: Saduni Rukshala

Sri Lanka’s coastal waters are rich in biodiversity and are vital to both local communities and the fishing sector. Shallow coastal waters are especially important as they provide habitats for many marine species and contribute significantly to local fisheries. However, these fragile marine ecosystems are increasingly being affected by intensified fishing activities.

If the ocean provides life and livelihoods for coastal communities, what happens when fishing methods begin to harm the very ecosystems that support them? One such method is the purse seine net. Purse seine nets are large fishing nets used to surround schools of fish in deep waters before the bottom is drawn together like a drawstring purse, which is how the method gets its name. While this technique allows fishermen to catch large quantities of fish efficiently, its use in shallow coastal waters can disturb sensitive marine habitats. It may also lead to the accidental capture of non-target species, including sea turtles, juvenile fish and small reef fish that play an essential role in maintaining healthy marine ecosystems.

Using purse seine nets in shallow waters can create significant environmental impacts. Coastal areas often contain coral reefs, seagrass beds and important breeding and nursery grounds for many marine species. Removing large numbers of juvenile fish before they mature can reduce future fish populations and threaten the long-term sustainability of fisheries. These environmental impacts can reduce biodiversity and disrupt the natural balance of marine ecosystems.

Shallow coastal ecosystems are highly interconnected, meaning that damage to one habitat can affect many other species. Coral reefs and seagrass beds provide shelter, food and breeding areas for fish, crabs, shrimp and other marine organisms. In Sri Lanka, coral reefs are especially important because they maintain fish populations by protecting young fish until they are mature enough to survive in open waters and they also help protect coastlines from erosion. Seagrass beds are equally valuable, as they act as nursery grounds for juvenile fish and feeding areas for animals such as sea turtles.

When purse seine nets are used too close to coral reefs and seagrass beds, these habitats can be disturbed, and the effects may spread throughout the entire ecosystem. If juvenile fish are removed before they can mature, there may not be as many fish available for larger species that depend on them for food. Over time, this can affect the marine food chain and reduce biodiversity. Repeated fishing in the same shallow coastal areas can also make it more difficult for habitats to recover naturally. As a result, marine ecosystems may become more susceptible to further threats including pollution, habitat destruction and climate change.

Recent research on purse seine fisheries highlights the importance of improving bycatch management to reduce environmental harm. Studies suggest that preventing unwanted catches before nets are deployed is more effective than trying to manage them after capture. Better monitoring, careful selection of fishing areas and responsible handling practices can help reduce the accidental capture of non-target species and improve the survival of released fish. Such approaches support more sustainable fishing methods and help limit damage to marine ecosystems.

In response to these concerns, regulations have been introduced in Sri Lanka to control certain fishing practices in coastal waters. These measures aim to reduce environmental damage, prevent overfishing and protect the livelihoods of communities that depend on healthy marine resources. However, the success of these regulations depends on proper enforcement, monitoring, and responsible fishing practices.

Purse seine nets play an important role in commercial fishing, but their use in shallow coastal waters can create serious environmental challenges. Protecting sensitive marine habitats and reducing bycatch are essential steps toward maintaining healthy ocean ecosystems. Fishing remains a vital source of income for many coastal communities and sustainable practices are necessary to balance economic needs with environmental protection. Sustainable management of marine resources is essential to ensure that Sri Lanka’s oceans remain productive and environmentally healthy in the years ahead.

Featured Image Credit : egersundtral