海鷂魚[ei] ray (fish)
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一天四海[ittenshikai] the world
雲海[unkai] sea of clouds
沿海[enkai] coast

遠海[enkai] deep sea
黄海[koukai] Yellow Sea
温海[atsumi] warm sea
海の幸[uminosachi] seafood

甘子[amago] land-locked variety of red-spotted masu trout (Oncorhynchus masou ishikawae)
甘い[amai] sweet
甘い小説[amaishousetsu] sentimental novel
甘え[amae] depending on other's kindness
甘えっ子[amaekko] spoilt child

甘える[amaeru] to behave like a spoiled child
甘く見る[amakumiru] to not take seriously
甘たるい[amatarui] sentimental
甘やかす[amayakasu] to pamper
甘栗[amaguri] broiled sweet chestnuts

海苔[nori] nori (edible seaweed, esp. species Porphyra tenera and others of genus Porphyra, usu. dried and pressed into sheets)
乾海苔[hoshinori] dried edible seaweed
苔状[taijou] mossy
苔類[kokerui] bryophyte (any of three groups of non-vascular land plants, inc. mosses, hornworts and liverworts)
苔癬[taisen] lichen

蘚苔[sentai] moss
転石苔を生ぜず[tensekikokewoshouzezu] a rolling stone gathers no moss
布海苔[funori] funori (seaweed)
蘚苔学[sentaigaku] bryology