
January 2025
© Jasmine Corbett
Our oceans, covering about 71% of the surface of our little blue planet, are home to a breathtaking array of marine ecosystems and underwater habitats. Yet, this vast, mysterious, and beloved biome is under threat — facing the compounding dangers of pollution, overfishing, climate instability, habitat destruction, and more.
By prioritising marine conservation, we can protect these ecosystems, restore critical habitats, and ensure the survival of countless species, from the charismatic sea otter to the awe-inspiring manta ray. Let’s explore why ocean conservation is so vital today and the benefits it brings to life on our planet.
© Jasmine Corbett
The Importance of Marine Conservation
The health of our oceans directly impacts the health of our planet. Marine ecosystems provide half the oxygen we breathe, regulate our climate, and support the livelihoods of millions worldwide. However, human activities are pushing these systems to the brink, driving and exacerbating issues such as:
Ocean acidification: The absorption of excessive carbon dioxide by oceans leads to acidification, which harms shell-forming species like corals and molluscs, disrupting marine food webs. This disruption can cause cascading effects, such as declines in fish populations that depend on these organisms for food, ultimately threatening entire ecosystems and the livelihoods of communities relying on marine resources.
Plastic pollution and bioaccumulation: Millions of tons of plastic enter the ocean each year, breaking down into microplastics that accumulate in the food chain. This process, known as bioaccumulation, occurs when these harmful substances build up in the tissues of marine organisms over time, eventually making their way up the food chain to larger predators — and humans who consume seafood — causing potential health risks.
Eutrophication: Runoff containing fertilisers and sewage creates nutrient overloads in coastal waters, causing harmful algal blooms that deplete oxygen and create dead zones.
Proliferation of invasive species: Human activities, such as shipping, introduce non-native species to new environments, where they often outcompete local species and disrupt ecological balance.
Without marine conservation efforts, we risk losing not only underwater habitats but also the vital benefits they provide to humanity.
© Jasmine Corbett
Benefits of Marine Conservation
Ocean Conservation Preserves Biodiversity
Marine conservation protects diverse species and ensures the stability of marine ecosystems. By safeguarding underwater habitats, we allow species to thrive in their natural environments. Healthy ecosystems are more resilient to environmental changes and can better support marine life. Preserving biodiversity is essential for maintaining the balance of ocean life and preventing the collapse of critical food webs.
Mitigates Climate Change
Healthy marine ecosystems act as carbon sinks, absorbing large amounts of carbon dioxide and mitigating the effects of climate change. For example, seagrass meadows and mangroves are highly efficient at storing carbon. By conserving these habitats, we reduce the amount of greenhouse gases in the atmosphere and protect coastal areas from rising sea levels.
Habitat Protection and Restoration
Many marine species rely on specific habitats, such as coral reefs, mangroves, and seagrass beds, for survival. Habitat protection prevents these areas from being destroyed by human activities like trawling and coastal development. Habitat restoration, on the other hand, involves actively repairing damaged ecosystems, such as replanting mangroves or rehabilitating coral reefs. These efforts not only provide shelter for marine life but also protect coastal communities from erosion and storm surges.
Supports the Blue Economy
Marine conservation contributes to a sustainable blue economy by ensuring that industries like fishing, tourism, and renewable energy can coexist with healthy oceans. Well-managed marine protected areas (MPAs) lead to healthier fish stocks, benefiting commercial and local fisheries. Similarly, thriving coral reefs and other underwater habitats attract tourists, generating significant economic revenue while encouraging eco-friendly practices.
Protects Iconic Species
Marine conservation helps safeguard iconic and endangered species that are integral to the ocean’s health and cultural significance. Protecting species like sea turtles, whales, and manta rays not only preserves their ecological roles but also fosters global appreciation for ocean conservation efforts.
© Jasmine Corbett
The Importance of Manta Ray Conservation
Manta rays are fascinating gentle giants that play a crucial role in maintaining healthy marine ecosystems by controlling plankton populations and contributing to nutrient cycling. However, manta rays face significant threats from overfishing, habitat destruction, and the trade in gill plates and meat.
Recent research highlights the devastating impact of the global gill plate trade. Gill plates are sought after for traditional medicine in some regions, leading to the overexploitation of manta ray populations. Our study found that manta and devil rays are landed in 43 countries, with their meat consumed in at least 35 and gill plates exported from 14. Despite previous protective measures, the meat and gill plate trades are ongoing — and unsustainable. These results underscore the urgent need for conservation measures to protect these majestic creatures.
© Jasmine Corbett
How You Can Help: Take Action for Marine Conservation
Protecting manta rays requires collective action, from advocacy to support. You can do your part for manta conservation by contributing to research, conservation, and education efforts through our Adopt a Manta program here at Manta Trust. By adopting a manta, you can help fund vital projects that protect manta ray habitats, combat illegal trade, and raise awareness about the importance of species conservation. Learn more about adopting a manta today!
Marine conservation is essential for safeguarding our oceans, protecting biodiversity, and combating climate change. Whether through habitat protection, species conservation, or sustainable practices, every effort contributes to a healthier planet. Join the movement to protect our oceans and their inhabitants by supporting our work at Manta Trust.
The Manta Trust is a UK-registered charity that coordinates global manta and devil ray research and conservation efforts. Our diverse team of researchers, scientists, conservationists, educators, and media experts promotes research, education, and collaboration, championing manta and devil rays while engaging people around the world in marine conservation. Support the Manta Trust today and help ensure a thriving and beautiful tomorrow.