Kiwa married the seas/waters/oceans has two wives in mythology:
Parawhenuamea: Ancestor of streams that flow from the land to the sea and of fresh water generally, making her Kiwa’s first wife.
Hinemoana (Ocean woman): A personification of the sea, serving as Kiwa’s second wife.
His wives are mentioned in the context of Pacific Ocean mythology, specifically in the tradition of Te Moana-Nui-a-Kiwa