Crustaceans Weight Angler Location Date Giant Mantis Shrimp 1.35 lbs Keith Harvey Ala Wai Canal, O'ahu 10/11/02 Keith was working on the dredge that was deepening the Ala Wai Canal when he nabbed this monster mantis shrimp. He hand-caught the mantis in 2 feet of water off the side of the dredge!