Researchers suggest that predation by a subspecies called Bigg's orcas might explain why members of another one, called ...

It’s long been thought that the Southern Resident orcas that live in our region have no predators, but a new article in Live Science suggests that non-resident orcas, or Bigg’s orcas, might be eating ...

Fish-eating killer whales in southern Alaska have a diverse, seasonally changing diet featuring salmon and groundfish, according to a published study in the journal Ecosphere. The types of fish ...

Two severed fins bearing the tooth marks of other killer whales have raised a troubling question: are some orcas hunting ...

Fish-eating killer whales in southern Alaska have a diverse, seasonally changing diet featuring salmon and groundfish, according to a recently published study in the journal Ecosphere. The types of ...

Ask anyone who’s had encounters with killer whales, and they will tell you just how smart they are. Orcas are incredibly ...

Detached orca fins scored with distinctive tooth marks suggest that killer whale cannibalism is happening — and it might ...

The discovery came as a surprise, because the two species usually prefer to avoid each other and keep a safe distance.

Hunting killer whales always eat the animals they kill, typically leaving behind only a few low-energy parts, such as fins. "Also, if it was just aggression, they wouldn't bother to tear off the fin," ...

Editor’s note: We’ll bite. Folks, why should we bother saving orca whales? Kids, you, too. Send your letters with your name, address and phone number to letters@heraldnet.com. Letters of 250 words or ...