Selkia

Selkia is a Fairy and Water type pokemon who has a 100% female gender ratio. It evolves into Selkina at Level 33 and is a new Weslon Pokemon

Biology
Selkia resembles a small humanoid mermaid girl who wears a blue, seal like hoodie. Her legs stick out of the long hood while her arms are tucked in

Dex Entries (Anime)
Debut Episode-Selkia are born when their evolutions shed their seal skin and come to land, where they mate with human males

Origin
Selkia is based off the Selkie, a norse mythological creature that is half woman half seal. It sheds it's seal skin to become a woman, who then goes to mate with human men,