Killer whales are so evil! One of their favorite targets are Gray whale calfs migrating with their mothers. They drown the calf by separating it from it’s mother and pushing it down with their bodies. The worst part is they only eat the tongue and leave the rest of the body for scavengers.
Here’s a video from the BBC showing Humpback whales trying to save a Gray whale calf from the Killer whales. It’s Whale Wars!