Scientists have found increasing evidence that culture shapes what and how orcas eat ... penguins, while another likes minke whales. Other behaviors vary from group to group. Some resident killer ...

A rare sighting of critically endangered southern resident killer whales off the Oregon coast offers a glimpse of a population with only 73 individuals left.

It was a shocking discovery. Killer whales eat a wide range of food as a species, from fish to squid to marine mammals such as seals. But different groups often have specialized diets based on ...