Orca (Orcinus orca) pod surfacing calm waters in Chatham Strait, southeast Alaska, USA.

orca killer predator whale cetacea cetacean mammal animal sea pacific oceanic ocean water underwater marine wild aquatic wildlife sea life northern hemisphere odontocete odontoceti toothed delphinidae north america north american united states alaska alaskan surface pod group social tails fins dorsal behaviour action active motion movement swimming