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.© ...

Captured off the coast of San Diego, the astonishing video pictured above captures the moment that a dolphin is punched on ...

Killer whales or orca (Orcinus orca) have been observed hunting with Pacific white-sided dolphins (Lagenorhynchus obliquidens) in the waters off British Columbia, Canada, and sharing fish scraps with ...

Researchers have observed dolphins and killer whales hunting together for the first time as part of a new study released on Thursday, Dec. 11. The top predators joined forces to feast on salmon off ...

For the first time ever, a unique cooperative hunting arrangement between dolphins and orcas has been documented. Researchers believe killer whales find salmon by tailing dolphins, who in turn benefit ...