How do killer whales get their energy?

Answer 1

From the food they eat, which is different from one type of whale to another. Some are filter eaters, who live on plankton, krill and other small stuff. Others, like the sperm whale and the orca, hunt bigger prey.

Answer 2

a killer whale obtain their energy by eating because they are heterotroph and animals

Answer 3

It's amazing how killer whales can turn their blubber into energy. They also rest when they need to.