海底撈月 かいていろうげつ Meanings Noun totally useless (fruitless) effort; wasting time on an impossible task (like trying to scoop up a reflected moon from the bottom of the sea) Kanji 海 sea. Read as カイ. 底 bottom. Read as テイ. 撈 catch fish. Read as ロウ. 月 month. Read as ゲツ. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists