The species Orcinus orca, generally known as orcas or killer whales, is made up of many genetically distinct populations called ecotypes. Each ecotype indicates an ecological specialization with its ...

When researcher Jared Towers set up his cameras underwater to observe a pair of killer whales, he saw something strange. She closed her mouth, paused, apparently watching for Towers’ reaction and hung ...

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," ...