Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
Sharks have been on the planet longer than trees.
14
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
A 42-foot sperm whale has about 7 tons of oil in it.
209