Images Scientific Name: Hemigrapsus sanguineus Common Name: Asian shore crab Native Range: Coasts of China, Hong Kong, Korea, Russia, and Japan. Carcinus maenas is a common littoral viagraetc.info is known by different names around the world. In the British Isles, it is generally referred to as the shore crab, or green shore crab. Identification: The Asian shore crab has a square-shaped shell with 3 spines on each side of the carapace. The carapace color ranges from green to purple to orange-brown to red.