A team of oceanographers led by the Schmidt Ocean Institute has made a significant discovery in the Southeast Pacific, uncovering and mapping a previously unknown seamount on the Nazca Ridge ...

Is this a new alliance between marine species? According to images published by the University of Auckland in New Zealand, the octopus may have found the ideal chauffeur for its numerous travels.

Blanket octopus pairs are some of the undersea world’s oddest couples. What’s so startling is the size difference: Males are about the size of a walnut—less than an inch long—but some ...

Their eyes weren’t deceiving them. An octopus was riding the shark. They nicknamed it the “sharktopus” and said it was one of the strangest things they had ever seen in the ocean.