Where does “青海亀” come from?

青海亀 (Japanese) comes from Japanese 海亀, from Japanese 海, from Old Japanese うな.

青海亀 (Japanese): a green sea turtle

Definitions

  1. a green sea turtle

Ancestry of “青海亀”, step by step

青海亀 traces back through two separate lines of ancestry.

via Japanese 海亀

StepLanguageWordMeaning
1Japanese海亀a sea turtle
2Japanese海a sea, an ocean; a lake; an object covering over...
3Old Japaneseうな—

via Japanese 青

StepLanguageWordMeaning
1Japanese青blue
2Middle Chinese青—
Every word from Old Japanese うな →Every word from Japanese 海 →Every word from Japanese 海亀 →