A large light grey mantis shrimp that can grow up to 185 millimetres long. It has two long spiny claws that it uses to capture food. The Japanese mantis shrimp has maroon ridges running down the mid-length of its body and a tail fan with a blue and yellow outer surface (grey and yellow in native species).
To help protect our environment:
Live in burrows in soft sediments, sand and mud in sheltered bays and estuaries.
The Japanese mantis shrimp preys on a wide variety of important kaimoana species including native shrimps (kōurara / tarawera), crabs and juvenile fish and competes for resources with other crustaceans; thereby altering benthic communities.
Before moving your boat or other craft to new locations, make sure the hull, anchor chain and all other equipment on board is clean and free of marine pests or other fouling. Think about where you’re taking on or releasing ballast, bilge or holding tank water, or water in any other container such as chilly bins, to avoid spreading marine pests.