The Blue Whale is the biggest animal that has ever lived on this planet, at over 30 metres (100ft for Yanks) long and 120 tonnes in weight, with a heart that weighs 600kg, this is one beastly motherfucker!This was from a doco made by the son of the great Jacques Cousteau.I grew up watching Jacques Cousteau movies as a kid... what a brave mofo that guy was!