Animal Trivia : The size of a heart of blue whale is as big as a compact car

The size of a heart of blue whale is as big as a compact car and weighs about 600 kilograms (1,300 lbs).

The volume of the brain of a blue whale is 10 times of the man's brain approximately.

They eat tiny krill which is a very small shrimp-like creature  up to 4 tonnes a day.