Sea clutter is unwanted radar return caused by ocean waves, often appearing as false echoes near the surface that can obscure ...

This viral optical illusion is testing your attention to detail. Can you find the hidden word before time runs out?

Beneath sea urchins’ exterior spines, rounded skeletons called tests are jewels of color, texture, and symmetry. There are hundreds of urchin species, and they’re found in every ocean on Earth ...

A sea turtle named Dilly Dally found its way back to the ocean following a daring rescue. Dilly Dally, a subadult loggerhead sea turtle and amputee patient, was released back into the ocean by the ...

University of Delaware associate professor Andrew Wozniak co-led a research cruise aboard UD’s Research Vessel Hugh R. Sharp to study the sea surface microlayer in the North Atlantic Ocean. Pictured ...

A baby colossal squid was filmed in the deep sea by an ocean expedition near Antarctica. The world's largest squid has eluded cameras for 100 years.

What is a sea? If you happen to call the sea the ocean, you’re not necessarily wrong – seas can still be considered a part of the ocean.

From starfish and sea slugs to jellyfish and sponges, the ocean's invertebrates are some of the most ancient and diverse critters on Earth. And so are their superpowers, as marine biologist Drew ...

While on a shark research expedition off the coast of Tenerife, marine biologists said they captured the first images of a live adult black seadevil anglerfish near the ocean’s surface.

A new database compiling over 400 sightings of a mysterious ocean phenomenon known as ‘milky seas’ could help scientists soon predict when the odd ocean glows occur.

Rare metals on deep sea and ocean floors miles below the surface produce "dark oxygen," and mining these minerals could cause potentially harmful changes to the marine ecosystem, according to new ...