More commonly known as sea slugs, nudibranchs are a very beautiful species of mollusc, famous for their stunning array of colours. Their name comes from the Latin for “naked”. They have venomous appendages on their sides to keep predators away. Nudibranchs are also all hermaphrodite - they have a set of organs for both sexes, but cannot fertilize themselves. Most are carnivorous, and a few are even cannibalistic!