It strikes from the dark. The Five-Toothed mantis shrimp waits in a burrow, eyes scanning the entrance. When prey passes, it extends its raptorial appendages with explosive speed. The strike is over before the victim registers movement. It is an ambush predator of high efficiency. Habitat is soft sediment. It digs U-shaped burrows in sand or mud. The burrow provides protection from predators and strong currents. The entrance is often marked by a small mound of excavated material. The shrimp maintains the structure diligently. Found in harbours and estuaries around the North Island. It tolerates variable salinity and temperature. This adaptability allows it to thrive in disturbed environments. It is common in the Waitematā and Manukau harbours. Diet consists of small fish and crustaceans. It does not chase. It waits. The raptorial claws are spiked, designed to impale soft-bodied prey. The five teeth on the carapace give it its name. They are structural, not functional for feeding. Threats are minimal. Predation by fish and birds occurs. Habitat destruction from dredging removes burrows. The shrimp relocates if possible. If not, it perishes. It is resilient but not invincible.