Pelagic Zone

MIT oceanographers discovered big fish like tuna and swordfish get a large fraction of their food from the ocean's twilight zone — a cold, dark layer about half a mile below the surface.

A shortfin mako shark, the fastest-swimming shark in the world, was caught on camera with an octopus catching a ride on its back off the coast of New Zealand.

The Laysan Albatross was first banded (or marked) in Hawaii in 1956. Meaning, she could be even older than the current estimate of 74.

Advances in technology that enabled the discovery of a new species by California scientists may lead to a better understanding of the ocean's depths.

A newly discovered bacterium could help humans deal with climate change — if scientists can figure out how to crack open its DNA.

LAMONGAN, Indonesia — Sulaiman is so practiced at stripping a zebra shark that he can skin the animal in just a few minutes. He sticks a knife into the meter-long (3-foot) fish and strips the skin away clean from the flesh and cartilage as morning breaks over East Java province. "It's only a few types […]

With powerful waves on top of it, a hurricane's storm surge can cause catastrophic damage.

OceanGate co-founder Stockton Rush said parts used in an experimental submersible that...

In the gateway to the Arctic, fat and sea ice are crucial, intertwined and dwindling. And...

In spring, stretches of Antarctic sea ice melt to form pockets of open water called polynyas, which make perfect homes for phytoplankton. These marine microbes can become so abundant that they turn the water green.

The Internet of Animals project combines animal tracking tags with remote sensing, to better understand habitat use and movement patterns. This kind of

Scientists tracked the movements of a large pregnant porbeagle shark for months. Then, its tag floated to the ocean surface, suggesting a larger shark had...

From worms with squid-like tentacles to fish with teeth on their tongues, here are some of the most alien-looking creatures in the deep ocean.

"People are killing many types of sharks at unsustainable rates, mainly through overfishing."

The Southern Ocean is wild and dynamic. It experiences Earth's strongest winds and largest waves. It is home to city-sized icebergs and the biggest ocean current on the globe, as well as tiny turbulent flows that fit inside a teacup.

Paleontologists in the United States have described a new genus and species of extinct crocodile relative based on a partially articulated skeleton found in the Middle Triassic Fossil Hill Member of the Favret Formation in Nevada.

Dietitians explain what mercury is, if you should be cautious of mercury, and the six fish are low in mercury you should be adding to your diet.

In a recent study published in Deep-Sea Research Part I: Oceanographic Research Papers, researchers of Wageningen University & Research and the University of Bergen have shown that release of deep-sea mining particles can have severe detrimental effects on deep-sea fauna.

Six full-body fossils of Ptychodus sharks have been formally analysed for the first time, revealing that they were fast swimmers that preyed on shelled creatures

Approving two proposed killer whale species could transform how they're conserved. It would also turn a new page in one of the strangest chapters in marine mammal history.