Play word 蝦蛄 蝦蛄 しゃこ mantis shrimp (any marine crustacean of order Stomatopoda, esp. the species Oratosquilla oratoria)
Play word 蝲蛄 蝲蛄 ざりがに crayfish (esp. Japanese crayfish, Cambaroides japonicus or red swamp crayfish, Procambarus clarkii)