A male diver from Ise dives into the sea every morning and evening because he is in one-sided love just like the awabi -- this is the song from which the idiom 'one-sided love of awabi (on the seashore)' is said to originate.
伊勢の海人　朝な夕なに　潜つぐ　鮑の片思いにして--故事成語「アワビの貝の片想い（磯のアワビの片思い）」の元となった歌