暗礁[anshou] reef
環礁[kanshou] atoll
岩礁[ganshou] reef
サンゴ礁[sangoshou] coral reef
離礁[rishou] refloat

堡礁[hoshou] barrier reef
坐礁[zashou] running aground
漁礁[gyoshou] fish reef
暗礁に乗り上げる[anshouninoriageru] to run aground

天魚[amago] land-locked variety of red-spotted masu trout (Oncorhynchus masou ishikawae)
海鷂魚[ei] ray (fish)
斉魚[etsu] Japanese grenadier anchovy (Coilia nasus)
旗魚[kajiki] marlin
鶏魚[isagi] chicken grunt (species of fish, Parapristipoma trilineatum)

杜父魚[tofugyo] sculpin (any fish of family Cottidae, inc. the bullheads and the miller's-thumb)
堅魚[katsuo] skipjack tuna
魚網[gyomou] fishing net
魚屋[sakanaya] fish market
魚貝[gyokai] marine products