Some species, including blue whales, spend little time at the surface. So despite their overwhelming size, they can be hard to find and tough to study.
Oil tankers load up in a port at twilight.
The Great Acceleration inaugurated the Anthropocene in the 1950s. Now, a similar race for resources and space is happening in the ocean.
Deep-sea mining could open a new industrial frontier in the world’s oceans.
Companies are developing technologies to mine the deep sea, but environmental regulations have yet to be finalized.
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.
New Zealand’s coastline spans a distance greater than from the south pole to the north pole.
New Zealand has one of the world's largest ocean territories, but the marine environment is at risk from climate change, pollution and fishing.
The first whale to be taken from Japan’s waters since the country resumed commercial whaling, July 1 2019.
Japan's exit from the IWC should spur on more global cooperation on environmental issues, not less.
Hector’s dolphins (Cephalorhynchus hectori) are found only in New Zealand.
The endangered Hector's dolphins are found only in coastal seas in New Zealand, but conservation experts describe New Zealand's proposed protection plan for the marine mammals as misleading.
Marine protected areas are geographically distinct regions of the ocean that are given special protection under law.
A new network of 20 sites have been declared as marine protected areas in South Africa.
Under the rain and burning sun, highly perishable fish need to be transported long distances to reach markets in Indonesia.
Regulating fish loss and waste is not easy, but it is worth the effort to save $7 billion every year for the benefit of the Indonesian people.
Zoological Society London
Coral reefs get a lot of attention, but the world has lost almost all of its vital oyster reefs in the last few centuries.
Recreational fishers adjacent to an established marine park in NSW.
The overwhelming majority of recreational fishers support no-fishing marine sanctuaries.
Nurdles are a raw feedstock used to make most of the plastic products we use everyday, but they're flooding the ocean as "mermaid tears".
Sydney’s iconic beaches are not yet part of a marine park.
The New South Wales government has turned its back on plans to create sanctuary zones covering 2.4% of waters around Sydney, despite evidence that these 'no-take' areas are crucial for protecting fish.
A fisherman holds up the saw of a sawfish caught in Madagascar. The species is dwindling along the coasts of Madagascar and Mozambique.
Ruth H. Leeney
Africa's remaining sawfishes are found along the coasts of Madagascar and Mozambique. But they are under threat.
Stormy seas ahead.
Confrontation between French and British scallop fishers is a warning about the resource conflicts of the future.
Predatory fish are among the most vulnerable species to human pressures.
The world has some 500 million square kilometres of ocean. But just 55 million square kilometres remain untouched by intensive human activities such as fishing.
A whale shark basking in the Maldivian shallows.
Why do whale sharks come together at just 20 locations around the globe?
Biofluorescence makes researching cryptic species such as this Lizardfish easier and less harmful.
Maarten De Brauwer
Much of the world's ocean is teeming with 'cryptic' fish species, which are small and hard to spot. But a new technique shines a light on these fish, which may in turn help to keep our seas healthy.
Michael Bogner / shutterstock
Plankton has a chemical fingerprint that reveals where it came from. Scientists have now used this to track sharks at the opposite end of the food web.