Claim: Heikegani is a type of decapod crustacean.
Evidence: is a species of crab native to Japan , with a shell that bears a pattern resembling a human face which many believed to be the face of an angry samurai hence the nickname Samurai Crab.
Crabs are decapod crustaceans of the infraorder Brachyura , which typically have a very short projecting `` tail '' -LRB- abdomen -RRB- -LRB- -LSB- : wikt : βραχύς , βραχύς / brachys -RSB- = short , -LSB- : wikt : οὐρά , οὐρά / οura -RSB- = tail -RRB- , usually entirely hidden under the thorax.