Heikegani

Heikegani (平家蟹, ヘイケガニ) (Heikeopsis japonica) is a species of crab native to Japan, with a shell that bears a pattern resembling a human face. It is locally believed that these crabs are reincarnations of the spirits of the Heike warriors defeated at the Battle of Dan-no-ura as told in The Tale of the Heike.