New research shows sea turtles, penguins and whales swim at optimal depths to minimise the energetic cost of travel.

Thousands of marine species from microscopic zooplankton to the largest cetaceans rely on sound for survival and many have ...

Nearly a dozen miles off the California coast on a foggy October morning, a crane lifts a boxy yellow robot off the deck of the research vessel Rachel Carson and lowers it into Monterey Bay’s choppy ...

Small, translucent creatures -- known as sea cherubs -- are washing up along Oregon beaches, and more sightings are occurring ...

It may be the most adorable sea creature ever—and seeing one face-to-face has been on the bucket list for a Japanese diver ...