SANTA CRUZ, CA–A new study may help explain why certain species of marine mammals seem particularly vulnerable to changes in their food supply. Researchers have found that some deep-diving sea lions ...

Discover the 25 craziest looking sea creatures, from transparent-headed fish to parasitic anglerfish. Explore the ocean's most bizarre inhabitants now!

Hidden deep beneath the Indian Ocean, researchers have discovered what may be the world's oldest and largest whale graveyard, a 5.3-million-year-old necropolis filled with whale fossils.

A review by marine biologists from The University of Western Australia has identified a need to prioritize future research of the Indian Ocean's diverse deep-sea ecosystems. Dr. Elin Thomas and Dr.

Deep-diving insect larvae are challenging a long-held idea about why there are no insects in the ocean, thanks to adaptable air sacs.

Most whales are defined by their teeth, but beaked whales carry only two, and they never use them to eat. The reason behind ...

Scientists at China's Beihang University developed a tiny morphable robot to explore the ocean's depths — and it's now taken a dive into the Mariana Trench. The team successfully demonstrated that its ...

EDITOR’S NOTE: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

For deep reef divers, descending into the ocean’s mesophotic layer can feel like exploring the moon. Discovering never-before-seen marine species is part of the mission. The deep diving team heads ...

What do deep-sea crustaceans munch on? A new study titled "A deep-sea isopod that consumes Sargassum sinking from the ocean's surface," published in the journal Proceedings of the Royal Society B: ...