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

皆既蝕[kaikishoku] total eclipse (of sun by moon)
乾蝕[kanshoku] the rotting of lumber stored with poor air circulation
金環蝕[kinkanshoku] annular eclipse
月蝕[gesshoku] lunar eclipse
蝕む[mushibamu] to eat into (e.g. by worms)

侵蝕[shinshoku] encroachment
日蝕[nisshoku] solar eclipse
氷蝕[hyoushoku] glacial scouring
腐蝕[fushoku] corrosion
分蝕[bunshoku] partial eclipse