Once thriving, there are now believed to be just 73 Southern Resident killer whales left in Washington state's Puget Sound.

Beluga whales ( Delphinapterus leucas) have also displayed mouth-to-mouth interactions in the wild. During a study on captive ...

Researchers have documented orcas dropping prey and other marine life in front of humans, as if offering us food. The orcas' ...

Prior to this instance, the “tongue-nibbling” had only been observed a handful of times in captivity. First seen in captive ...

Underwater contact makes up most of orcas’ social life, yet scientists traditionally watch from boats and count surface cues: ...

Orcas are brilliant creatures. Their brains are highly developed when it comes to problem-solving skills, cognition, and ...

They amuse us by wearing salmon hats, enrage us by sinking our expensive yachts, and now they have been documented sharing their meals with us – why?

Orcas have been spotted giving each other rubdowns with kelp tools, rubbing pieces of the seaweed between their bodies.

Rubbing against algae to slough off dead skin has been observed in other cetaceans, but never before with what can truly be ...

TACOMA, Wash. — A pod of orca whales was spotted playing in Commencement Bay near Tacoma. Video shared with KOMO News by ...

The discovery — published June 23 in Current Biology — constitutes the “first evidence” recorded of tool-making by marine ...

Under the terms of a settlement agreement, there could soon be new federal protections for the Chinook, the largest of all ...