Conservationists have described 2025 as year of the octopus after enormous numbers were seen in the south west.

Researchers retrieved reef monitoring devices that had been placed in deep coral reefs in Guam. The devices were placed up to 330 feet below the surface.

A small fossil reveals that the largest freshwater fish, Otophysans, emerged in the sea, not in rivers, changing the ...

Everyone’s favorite white shark, Contender, is back on the move again, this time toward warmer seas for the winter. Contender caught attention in January, when he was tagged by nonprofit OCEARCH, off ...

At the bottom of the world’s trenches, there’s a fish that shouldn’t exist. Here’s how it earned the title of the ...

Diver John Roney shared mesmerizing video footage from his last dive — a close-up of the world's largest lion's mane jellyfish.