These spheres from the abyss conceal creatures with startling biology.

Clay weighs down carbon and other materials, helping it sink deeper into the ocean. Video courtesy of Dartmouth College. In 2016, Dartmouth professor Mukul Sharma was thinking that bringing down ...

For centuries, massive teeth washing ashore left people wondering what kind of monster once ruled the seas. Those teeth belonged to the megalodon, the largest shark to ever exist. In this video, ...

Photojournalist Brian Skerry has taken photos for National Geographic for the past 14 years and counting. His photographs are the focus of a new exhibit scheduled for early next year at the ...

Add Yahoo as a preferred source to see more of our stories on Google. This undated image provided by the Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences shows tubeworms in ...

Few have explored the ocean’s deepest depths – but those rare few have shared images of the strangest, most mysterious ...

Q. I enjoy learning about bizarre animals like the terrestrial one you recently wrote about called a hammerhead worm. With all the strange animals found on land, the oceans must be full of even more ...

Here on the surface at Averill Park, children play on the vibrant green hills. Books are open. Lunches are enjoyed. But Rachel — an 18-foot-diameter tunneling machine — awaits the signal to resume ...

Sea creatures have adapted to help them thrive in extreme environments. Unusual features allow them to live thousands of feet below the surface. Underwater robots give researchers a glimpse at some of ...