The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Whales and dolphins can't taste anything other than salt.
11
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
The head of a jellyfish is called the "Bell."
6