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.
Prime Minister Justin Trudeau and his wife Sophie Grégoire Trudeau kayak in the Gulf Islands National Park Reserve, in British Columbia.
THE CANADIAN PRESS/Darryl Dyck
Prime Minister Justin Trudeau has taken swift action on protecting marine areas over the past two years, but he'll need to continue this momentum if he is to cement his legacy.
The mouth of the Murray River delivers vital nutrients to marine life in the ocean beyond.
Low flows in the Murray River in recent years have harmed tiny marine plants called phytoplankton, with consequences for local marine species and management.
BlueOrange Studio / shutterstock
Palau has banned commercial fishing in most of its waters – while encouraging more foreign visitors.
The science says that no-take zones offer the best protection for marine life.
AAP Image/Environs Kimberley
Australia's reputation as a global leader in marine conservation is being put at risk by plans to strip back sanctuary areas within marine parks, say scientists from around the globe.
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.
A century after they vanished, oysters have returned to the Dornoch Firth thanks to an ambitious natural cleaning project
The Great Barrier Reef is currently experiencing a second wave of bleaching.
AAP Image/WWF AUSTRALIA, BIOPIXEL
The Great Barrier Reef is in crisis, as a second wave of coral bleaching hits. But the system of bodies and laws that protect it are getting more complicated – and less productive.
Technology will help in fight to save celebrated creatures, as new law comes into force.
Giant clam shells seized by authorities in waters off Australia’s north.
Prized species such as sea cucumbers are increasingly being poached from Australian waters. But if foreign aid can give fishing crews alternative livelihoods, the problem could ease.
Japan’s previous scientific whaling program was shut down. But its new one may not be.
EPA/Tim Watters/Sea Shepherd Australia
Australia's new resolution will apply stricter monitoring to the special permits that allow some nations to continue whaling. But the new rules are non-binding, meaning countries are free to ignore them.
Hammerheads are the species most caught in NSW’s shark nets.
Shark image from www.shutterstock.com
New South Wales wants to extend its shark net program after a spate of attacks in the north of state.
Seagrass meadows are often overlooked by the public but vital to the ocean ecosystem.
Seagrass is more than just a bit of sea greenery.
We’ve filled our oceans with concrete.
Sea wall image from www.shutterstock.com
We've building in the sea for centuries, and it's putting our oceans out of balance.
Australia’s oceans are feeding grounds for many wildlife species, including seabirds.
More of Australia's oceans should be placed under high protection, according to the latest marine reserves review.
Shane Myers Photography / shutterstock
Huge reserves in the middle of the Pacific are fine, but what about conservation closer to home?
The endangered Hawaiian monk seal is one of the 7,000 species that gained a measure of protection.
U.S. Fish and Wildlife Service
The Papahānaumokuākea Marine National Monument is huge win for preservation, but it also poses outsized management challenges for the National Park Service.