The world's largest mammal, the blue whale, weighs about the same as 30 African elephants! The tongues alone of these giants can weigh as much as one elephant. Their hearts, as much as a car.
Blue whales reach these mind-boggling dimensions on a diet composed almost exclusively of tiny krill. A single adult blue whale consumes about four tons of krill a day during certain times of the year.
You might also like: