Cnidaria Turritopsis Nutricula is a species of jellyfish with a very unusual quality: it is biologically immortal.
Intriguing
Mollusca Vampire Squids share similarities with both squid and octopuses. They are also the only species that thrives off of feces and pollution.
Arthropoda A Bombardier Beetle defends itself by firing bowling hot spray from its abdomen.
Invertebrates Nematoda
Annelida
An estimated 90,000 Nematodes can be present in a rotten apple.
A Hindu Medicinalis leech has 32 brains, five pairs of eyes, several pairs of testes and one pair of ovaries.
Platyhelminthes
Porifera
Echinodermata
Tapeworms have a ribbon-like body that may be up to 9m (30ft) in length.
The chemicals that a sponge produces are being used to find a cure for cancer and other diseases.
If you place a sea cucumber in fresh water, it will explode.