HYDRA Some facts!!! Hydra are a fresh water animal that belongs to the same group as jellyfish, corals and anemones, The name Hydra stems from Greek mythology. It was the name given to a many headed sea serpent. The hydra that we know resembles this mythological monster by its many tentacles. Hydra are found in nearly all clean fresh water systems in Australia and around the world . They have a range of colours from brown, green white, and many other variations . Many people have