Grey whales take a 12,000 mile round-trip migration from their breeding grounds in Mexico up the entire coast of North America to the Arctic Sea. Off Monterey, California, a grey whale is cruising slowly with her calf and this makes them vulnerable to attack. A 15-strong pod of killer whales takes six hours to run down the calf and drown it. The killers only eat the tongue and lower jaw.
Killer whales kill sun of grey whale (6 hours fighting)
This video is taken from BBC's Blue Planet documentary series. Narrator: David Attenborough.
This proof God is a jerk.