By measuring how and when elephant seals sleep, researchers were able to figure out how elephant seals change their risk-taking behavior as they gain weight.
As more and more plastic trash permeates the oceans, fragments are making their way into fish and shellfish – and potentially into humans.
A high seas treaty could help rebuild populations – but time is running out.
New fossil detective work sheds light on the life of megalodon, the biggest predatory shark ever discovered.
You're more likely to drown at a beach than be killed by a shark. But there are things people can do to reduce the already low risk even further.
Even within a species, animals will suffer climate change differently. For sharks, it pays to live in warmer waters.
Recent shark-related deaths fuel the debate around the best way to keep people safe in the water, without hurting marine wildlife.
Researchers are using a newly developed satellite tag to study previously unknown aspects of tiger shark reproduction. This approach could be used on other difficult-to-study shark species.
You won't see a blue shark near the beach, but thanks to 50 years of tagging data, scientists are learning about their wide-ranging lives at sea.
Scientists thought there was only one sixgill sawshark species – until now.
Shark skin is composed of millions of tiny scales, which have a similar chemical composition to human teeth.
Weeks out from summer, new research says there is no evidence shark nets keep us safe from sharks.
The eastern Arctic and sub-Arctic marine areas of Canada are changing rapidly under climate change.
Former fishermen in the Philippines are lifting their families out of poverty through whale shark tourism.
Media coverage of sharks often exaggerates risks to people, but more than 500 shark species have never been known to attack humans, and there's lots to learn about them.
Even the remote open ocean offers no escape from industrial fishing for sharks.
Far more megafauna species use coastal wetlands than we thought. And it affects the way we need to address the extinction crisis.
Why do scientists spend so much time and money mapping the DNA of species like white sharks? Single studies may offer insights, but the real payoff comes in comparing many species to each other.
The False Bay ocean food chain in Cape Town began to change significantly in 2015 with the appearance of shark-eating killer whales.
Banning fishing in no-take marine reserves on the Great Barrier Reef does not protect sharks as well as received wisdom would tell you.