Humpback whales (Megaptera novaeangliae) like the ones pictured here with bottlenose dolphins (Tursiops truncatus) in Kona, Hawaii, appear to be more open to interacting with fellow cetaceans.

More volunteers are being recruited to help rescue a growing number of whales, dolphins and porpoises washing up on UK shores ...

A suction camera tag deployed by Dr Olaf Meynecke captures the depths dolphins will sometimes accompany whales to - in this case, even to the sea floor. A new study has investigated hundreds of videos ...

Killer whales and dolphins have been captured hunting together on camera, in what could be a scientific first. Researchers believe this is the first documented case of cooperative foraging between ...

The relationship between whales and dolphins has long been shrouded in mystery. But, new research reveals that — despite their vast difference in size — these marine mammals often enjoy playful ...

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 ...

Here you can spot gray, blue and humpback whales, dolphin pods, sea lions and sharks while enjoying a luxurious beachside ...

A first-of-its-kind assessment says whales, dolphins and seals living in U.S. waters face major threats from the warming ocean temperatures, rising sea levels and decreasing sea ice associated with ...

The ocean is under increasing pressure. Everyday human activities, from shipping to oil and gas exploration to urban pollution, are affecting the marine environment. Extensive research shows how this ...

It was a once-in-a-lifetime encounter. A tour group encountered two whales and a pod of dolphins while riding Sea-Doos from Catalina Island to Long Beach. "These whales were either curious or playful.