Scientists were amazed to spot a Maori octopus hitchhiking on the back of a speedy shortfin mako shark, an unusual sight ...

A new study shows that the mere presence of poop prompted the crustaceans to launch into evasive maneuvers. New research ...

The study suggests that even the faintest hint of penguin droppings in the water is enough to prompt krill into escape behavior.

White sharks, which grow to 4,500 pounds, are common off the Outer Banks, due to their use of the East Coast like a seasonal ...

Warning signs about shifts in key food sources for fish are beginning to be observed in marine ecosystems worldwide.

New findings suggest the evolution and behavior of at least some baleen whales has been significantly shaped by fear of orca attack.

Imagine looking at the world through the stalked compound eyes of krill in the Southern Ocean. All of a sudden, a penguin appears like a voracious giant, streamlined like a torpedo, chasing and ...

Rhythmic clicks, grunts and roars fill the Año Nuevo Island Reserve in California, home to a large breeding colony of ...

Megalodon was likely a long, streamlined predator, not a bulky giant. Scientists compared its bones with modern sharks.

All steelhead start life as rainbow trout, but not all rainbow trout will become steelhead. Confused? You’re not alone.

“In a jaw-dropping moment of marine history, Sea Life Sydney Aquarium has announced the rare arrival of a baby gray nurse shark!” aquarium officials said. “The tiny yet mighty male pup, affectionately ...