Orcas often share food with each other—it’s a prosocial activity and a way that they build relationships with each other,” ...

The team ran experiments offering people who returned bottles the option of getting a typical ten-cent payout—or the small ...

Dolphins use unique sounds to bond, hunt, and warn. Discover how they “talk” through whistles, clicks, and more.

The smallest species of whale tricks its predators by gushing red gallons of red fluid into the water when under attack ...

The largest blue whale ever recorded weighed over 199 tons. Even average-sized blue whales are massive, weighing around 350,000 pounds. That’s about the same as 30 adult male African elephants.

Whales are already known to frolic through seaweed in a practice called “kelping”. They are thought to do this partly for fun ...

Behavioral ecologist Michael Weiss was browsing through new drone footage of the orca pods he studies in the Salish Sea when he spotted one of the killer whales carrying something green in its mouth ...

A study published in the journal Current Biology describes a new example of tool use by a critically endangered population of ...

The whales use quick body movements to tear pieces of bull kelp for use as tools, perhaps the first known toolmaking by a marine mammal.

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

Scientists have documented what might be the first case of friendly interactions between killer whales and smaller cetaceans.