It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Whales and dolphins can't taste anything other than salt.
11
Two dogs were among the Titanic survivors.
262