鰭ひれ Noun English jmdict 1 noun (common) (futsuumeishi) word usually written using kana alone fin (e.g. of a fish)
鰭長巨頭ひれながごんどう Noun English jmdict 1 noun (common) (futsuumeishi) word usually written using kana alone long-finned pilot whale (Globicephala melas)