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Life on Earth depends heavily on its magnificent and complex ocean ecosystems. But the seas are suffering from overfishing, loss of key habitat—such as coral reefs—and the depletion of important species from sharks to small fish that are the basis for the entire food web.
Pew’s ocean work includes efforts to create large marine reserves; end illegal fishing; protect key species such as penguins, sharks, tuna and forage fish; and establish policies that protect, maintain, and restore the health of marine ecosystems.
Latest Research

Fact Sheet
October 15, 2020 Un système de surveillance électronique efficace nécessite la contribution des parties prenantes

Ocean, People, Planet
There is only one ocean, essential to the life of everyone on Earth—and it faces perils like never before
The ocean covers nearly three-fourths of the Earth. Vast and powerful, it is central to the life of everyone on the planet, supplying more than half of the world’s oxygen, providing food, recreation, and supporting economic vitality. Yet for all its seeming invincibility, the ocean has never been more in danger. Its very chemistry is changing as ocean waters become more acidified through climate change. Its inhabitants—from large sharks to tiny crustaceans the size of a human finger—are under assault with XX percent of fish stocks overfished. And ocean levels continue to rise, challenging the barriers separating people from water.
U.S. West Coast coastal habitat and marine conservation news, analysis, and opportunities to act.
OUR WORK
Related Projects

The Lenfest Ocean Program is a grantmaking program that funds scientific research on policy-relevant topics concerning the world’s oceans and communicates the results of the supported research to decision makers and other interested audiences....
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Science provides a critical foundation for effective environmental conservation measures. Pew pursues a diverse portfolio of scientific projects to answer key questions and provide practical data, and its experts develop, support, and communicate...
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Chile’s Patagonia region is one of the world’s last largely intact natural areas. Its glaciers, hardwood forests, rugged coastline and wild fjords remain remarkably untouched. Pew is partnering with nongovernmental organizations, universities, and...
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De la chaleur de l'équateur au froid rigoureux des pôles, les océans sont le lien qui unit notre planète. Représentant plus de 70 pour cent de la surface terrestre, ils abritent près d'un quart des espèces connues dans le monde, sans compter celles...
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The Arctic harbours one of the world’s least disturbed marine ecosystems, plays a crucial role in moderating the planet’s climate, and is home to spectacular wildlife, fish, and marine mammal populations. Its biological riches provide physical and...
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In an effort to reduce the amount of plastic waste entering marine waters, Pew will work with governments, industry, scientists, and other nongovernmental organizations (or civil society) to better understand this global problem and offer solutions. ...
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From mangroves and salt marshes to underwater coral reefs and seagrass meadows, nearshore habitats host abundant marine life and support the economic vitality of coastal communities across the United States....
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From the tropical north to the red centre and the surrounding oceans, Australia is one of the wildest and most intact places on Earth. An ancient place of stark extremes and exquisite beauty, Australia for tens of thousands of years has hosted the...
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Pew will build partnerships with countries to help them integrate coastal wetlands and coral reefs into their commitments and explore scaling this approach to substantially reduce the rate of coastal habitat loss. ...
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The U.S. Arctic hosts some of the world’s last intact large marine ecosystems, but they are threatened by climate change, loss of sea ice, and industrialization....
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The high seas make up about two-thirds of the world’s ocean, covering the vast expanses beyond the jurisdiction of any country. Research has shown that the high seas hold some of the largest reservoirs of biodiversity on Earth, supporting abundant...
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Pew is working to secure comprehensive and complementary rules and consequences for international fisheries management to support healthy, resilient marine ecosystems and fisheries over the long term....
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Certains types de subventions à la pêche versées par les gouvernements contribuent à un grave problème au niveau mondial : trop de navires de pêche sillonnent les océans du monde pour exploiter des ressources halieutiques de plus en plus maigres. ...
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The cold, dark waters of the deep sea once were thought to be largely void of life, but scientists now know that the opposite is true. Underwater mountain chains teem with fish, corals, and other fauna and flora. Hydrothermal vents gush mineral-rich...
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