Metanephrops japonicus is a species of lobster found in Japanese waters, and a gourmet food in Japanese cuisine.[1] It occurs from Chōshi, Chiba Prefecture (Honshu) to the east coast of Kyushu, where it lives at depths of 200-.[1] Adults grow to a total length of 9-, and a carapace length of 3cm-7cmcm (01inches-03inchescm).[1]