【綿津見神 / Wadatsumi】
Wadatsumi is a child whose father is "Izanagi" and mother is "Izanami".
He is worshiped as the god of water, rain, and good fishing.
Wadatsumi is enshrined at Shikaumi Shrine in Fukuoka Prefecture, Japan.

【Meaning】
“綿/wada” is an old expression, meaning ”sea”.
“津/tsu” is a conjunction "of" or means “overflowing”.
“見/mi” is an old expression, meaning ”spirit”.
“神/kami” means “god”.

【Concept】
Since he is a god related to the sea, I add an underwater expression.