The Mizukagami crab, also known as the Japanese mirror crab, is a species of crab found primarily in the coastal waters of Japan. It is recognized for its distinctive, flat body and reflective shell, which helps it blend into its surroundings. This adaptation provides protection from predators in its natural habitat. Mizukagami crabs typically inhabit sandy or muddy substrates in shallow waters. They are omnivorous, feeding on a variety of organic materials, including algae and detritus. Their unique appearance and ecological role make them an interesting subject of study in marine biology.