The largest animal ever known to have existed, the blue whale / Having a whale of a time: The beautiful images show the whale plunging into the deepest depths of the clear blue sea
Whale Size Comparison Chart by Dixie Allan
So colossal are these majestic marine mammals, their hearts alone weigh as much as a car.
Humpback whales, heroes of the sea? Humpback whales appear to rescue not just their own species, but also other whale species, seals and sea lions from attacks by killer whales.