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The Ocean Blog

This bluefin trevally is lucky to call Hawaii’s Maro Coral Reef, part of the Papahānaumokuākea Marine National Monument , its home. Maro is the largest reef in the Northwest Hawaiian Islands and just...
A public service announcement uses a dramatic example to emphasize that ocean fish aren’t as big as they used to be. Find out more about the decline in the ocean's top -- and often large -- predators...
The Papahānaumokuākea site in the United States was inscribed on the World Heritage List in 2010. The site is a vast isolated cluster of small low-lying islands and atolls with its surrounding ocean...
On many of the dives, Oceana's 2011 Baltic Sea expedition team saw little wildlife in the oxygen-depleted areas. But near some marine protected areas, the crew saw an array of marine life, including...
The Shiretoko site in Japan was inscribed on the World Heritage List in 2005. The site’s key feature is its exceptional productivity, largely resulting from the formation of relatively low-latitude...
The Aldabra Atoll site in the Seychelles was inscribed on the World Heritage List in 1982. The site is comprised of a coral reef surrounding four large coral islands, which enclose a shallow lagoon...
In California, the Gulf of Farallones National Marine Sanctuary provides protection to Great White Sharks and other species. More about the great white shark can be found in our Great White Shark...
Human activity is increasing in the Arctic marine environment due to climate change. To help the most vulnerable areas, the Global Marine Program of IUCN , along with partners, convened a series of...
It is easy to feel hopeless when reading the news coverage of ocean conservation. Between climate change , acidification , pollution and overfishing, it often feels like the ocean and its...
This colorful coral lives in Australia's Great Barrier Reef. On the whole, this coral reef is the largest single structure built by living organisms and can be seen from space! Although more than one...
Bikini Atoll, formed over millions of years around an island in the Pacific Ocean about halfway between Papua New Guinea and Hawaii, has been subjected to horrific human-caused disturbances. Between...
The Ha Long Bay site in Vietnam was inscribed on the World Heritage List in 1994. The site's 1,600 islands and islets form a spectacular seascape of limestone pillars surrounded by species-rich...
We began this journey three months ago, a team of scientists and filmmakers traveling the East African coastline by boat to document and research the status of coral reefs from South Africa to Kenya...
Broad-leaf seagrass ( Posidonia australis ) with algae epiphytes grows at Corner Inlet Marine National Park in Australia . The marine park protects large areas of seagrass habitat from fishing—but it...
In November 2012, Australia began protecting a huge swath of its ocean from overfishing and oil exploration, creating the largest network of marine reserves in the world at a grand total of 1.2...
The Ujung Kulon National Park in Indonesia was inscribed on the World Heritage List in 1991. The park, located in the extreme western tip of Java on the Sunda shelf, includes the Ujung Kulon...
The Puerto-Princesa Subterranean River National Park site in the Philippines was inscribed on the World Heritage List in 1999. The site's topography varies from flat plains to rolling hinterlands and...
The Area de Conservación Guanacaste site in Costa Rica was inscribed on the World Heritage List in 1999. The site has the most intact inshore Pacific marine ecosystem between the Panama Canal Zone...
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