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A blue whale’s tongue can weigh as much as an elephant.
Whales drown if they remain underwater for over 30 minutes.
A blue whale’s heart can be as large as a car.
Despite their massive size, blue whales feed almost exclusively on krill, tiny shrimp-like animals about the size of a jelly bean.
The water in a blue whale’s mouth weighs as much as its entire body.
Whales can suffer from sunburns.
Humans killed at least 2.8 million whales in the 20th century.
Grey whales always mate in a threesome: two males to one female.
Blue whales can get a tan.
In their first year of life, baby blue whales gain 200 pounds (91 kg) every day.
Before compasses, Vikings navigated the ocean using birds, whales, celestial bodies, chants and rhymes.
Dolphins and whales give birth with the tail first instead of the head.
Most of a sperm whale’s head is filled with a fatty, yellow tissue called “junk.”
Killer Whales are actually dolphins, not whales.
Humans, killer whales and short-finned pilot whales are the only species in which females live well beyond menopause.
Humans have been hunting whales since the Stone Age. Ancient whalers used harpoons to spear them from boats out at sea.
Sperm whales are the loudest animals on Earth. Their calls reach up to 230 decibels.
Dolphins and whales squeal to express delight.
Only three known mammals experience menopause: orcas, short-finned pilot whales and humans.
Blue whales can eat half a million calories in a single mouthful.