An Atlantic cod on ice. Cod fisheries in the North Sea and Irish Sea are declining due to overfishing and climate change.
Robert F. Bukaty/AP
As the oceans warm, fish are moving to stay in temperature zones where they have evolved to live. This is helping some species, hurting others and causing a net reduction in potential catch.
Though they’re protected worldwide, great white sharks encounter longline fishing vessels in half of their range.
Even the remote open ocean offers no escape from industrial fishing for sharks.
Researchers pour a barrel of hagfish into a holding tank aboard a research vessel about 20 miles off the coast of Portsmouth, New Hampshire.
Hagfish have been called the most disgusting creatures in the ocean. But what are they?
A fisherman carries a yellowfin tuna to be weighed and sold in Mindanao, Philippines in 2013.
John Javellana / Greenpeace
Earth-orbiting satellites and AI tools can track fishing vessels around the world.
A healthy coral reef at Swains island, American Samoa.
NOAA/NMFS/PIFSC/CRED, Oceanography Team.
In a study that cultivated coral 'gardens' with varying numbers of species, plots with more species were healthier. This finding could inform strategies to help coral reefs survive climate change.
MOdAMO / shutterstock
Climate change, pollution and illegal fishing by foreign boats is threatening the livelihoods of millions of people.
Bird’s eye view of an open sea fish farm in, Aegean, Turkey.
Aquaculture is endangering the marine environment, threatening the livelihood of small-scale fishers and food security.
Stormy seas ahead.
Confrontation between French and British scallop fishers goes is a warning about the resource conflicts of the future.
A fisherman checks his fish corral nets in the Cau Hai lagoon, Vietnam.
When it comes to small-scale fisheries, there is no one route to sustainability. Finding success stories can help map those paths.
Marine parks protect fragile ecosystems, like coral reefs.
What would you do if you saw a fisher breaking the law? Would you report the offender to the police? Confront them? Or would you do nothing? These choices affect the future of marine protected areas.
Waste not, want not.
Artisanal fishers in Sri Lanka are throwing away more marine species than they keep.
Villagers enjoying the evening fishing in Kavieng, Papua New Guinea.
Sustainable fisheries tick all the boxes. They can fill your belly and your wallet, and generate less CO2 than conventional agriculture. So why is some integral funding for marine fisheries falling?
Scientists call large marine protected areas effective tools for conserving sea life. But do they benefit countries that create them? Scholars explain how Palau's huge marine protected area seeks to protect resources for Palauans.
Ern McQuillan, Tuna Fishing at Eden, New South Wales, 1960.
National Library of Australia
The history of fisheries exploitation in Australia reveals a staggering natural bounty, which has been alarmingly fragile without proper management.
Orca family group at the Bremer Canyon off WA’s south coast.
The government aims to dramatically reduce the areas offered full protection and expand zones where fishing is allowed, while also claiming that this will still deliver good conservation.
Mud oysters played a largely unappreciated part in Australia’s history.
In colonial times Australia's waters were teeming with mud oysters that provided food, cement, and cleaned the oceans. Now a 20-hectare man-made reef aims to restore some of their former glory.
The focus of food production systems, including aquaculture, must move beyond maximising yields to consider nutritional quality too.
Whitespotted surgeonfish (
Acanthurus guttatus), found in the Indo-Pacific, crop the upper portion of algae while feeding, preventing macroalgae from becoming established on reefs.
Plant-eating fish control the spread of seaweed and algae on coral reefs. New research explaining why populations of these fish vary from site to site could lead to better reef protection strategies.
Sharks: playing their part in reducing climate change.
Poor management of the oceans, including the killing of crucial marine predators, could result in more greenhouse gasses.
Fish caught just outside the Marine Protected Area (MPA) area in Tikina Wai, Fiji.
© Brent Stirton / Getty Images
Melanesia's oceans are worth at least US$5.4 billion, but are under increasing threat.