Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Sloths take two weeks to digest their food.
243
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
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
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
A 42-foot sperm whale has about 7 tons of oil in it.
209