In 1987, a group of killer whales off the northwestern coast of North America briefly donned salmon “hats,” carrying dead fish on their heads for weeks. Recently, a male orca known as J27 ...

What is known is that they have a relatively stable supply of deep-swimming cartilaginous fish — such as sharks or rays — ...

That year a television station aired footage from Similä’s study showing them daintily eating one fish at a time rather than gluttonously gulping down entire schools. Orca pods that lost ...

For the first time, a group of killer whales has been documented preying upon a prickly shark, a rare deep-sea dweller, according to a study published on March 20 in the journal Frontiers in Fish ...

Deborah Giles, the research director for the nonprofit Wild Orca, witnessed the return of the salmon hat trend while observing orcas in the Puget Sound. "We saw one with a fish on its head.