The solitary fish named Mambo stopped eating and seemed to be missing its human visitors—so aquarists attached photos of ...

Why it's awesome: Earth's oceans are home to many secretive and unusual creatures that humans rarely see — including giant ...

This menacing predator uses its long, sharp teeth as a cage to keep small fish and shrimp trapped once they’re inside its mouth. The video above, filmed by the Monterey Bay Aquarium Research ...

These elusive deep-sea creatures have a 3.3-foot-wide (1 meter) bell and four ribbon-like arms that grow up to 33 feet (10 m) long ... Bay Aquarium Research Institute spotted small fish, pelagic ...