Mantis shrimp or stomatopods are marine crustaceans, the members of the order Stomatopoda. Most species can grow to around 10 centimetres (3.9 in) in length, though a few species reach up to 38 cm (15 in). The largest ever caught has a length of 46 cm (18 in) in the Indian River near Fort Pierce, Florida of USA. The carapace of mantis shrimp covers only the rear part of the head and the first four segments of the thorax. There are more than 450 species of Mantis shrimp.