6. Mantis Shrimp
This colorful crustacean is called the mantis shrimp, with a few nicknames in different countries. They are called sea locusts in Assyria, and in Australia they are called prawn killers, and sometimes they are even called thumb splitters – because they are capable of slicing fingers or thumbs even if they aren’t handled properly. There are over 450 species of the mantis shrimp, and their types can vary from the usual brown to the brightly colored.