Add Yahoo as a preferred source to see more of our stories on Google. An endangered Southern Resident Killer Whale, an icon of the Pacific Northwest, breaches near Henry Island in Washington State.© ...

When researchers from the University of British Columbia set out to film the solitary hunting habits of Northern resident killer whales, they expected to see quiet and solitary predators at work.

Captured off the coast of San Diego, the astonishing video pictured above captures the moment that a dolphin is punched on the chin by a killer whale. The dolphin rises above the surface, but the orca ...

The sighting of Orca whales and dolphins off the UK coast is giving a huge boost to tourism. Boat tour operators reported the latest sighting of Orcas near the Farne Islands off Northumberland. Killer ...

MONTEREY, Calif. -- A rare encounter left a whale-watcher in Monterey County, California in shock when a killer whale attacked a pod of dolphins. Dolphins swam for their lives after encountering eight ...

From the mighty orca to the enigmatic Risso’s dolphin, these individuals remind us that the dolphin family is far more diverse - and far more impressive - than we may realise.

According to the aquarium, Old Thom is the only orca regularly seen in North Atlantic waters. Unlike most killer whales that swim in pods, Old Thom is known to swim alone or with dolphins in the Gulf ...