Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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In their early careers, Sylvester Stallone and Jackie Chan both took part in porn.
11
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
There's a swing on the edge of a cliff in Ecuador. It has no safety measures and is called the 'Swing at the End of the World'.
22