octo maid

I want a live action, high production movie about mermaids that takes place entirely under the ocean, and doesn’t include a mermaid wishing to be human for some guy she saw on a beach or boat, but instead is about  maybe fighting the effects of pollution and there’s like a strange sickness effecting her kingdom that’s turning her fellow merfolk into zombie merfolk, and it’s up to her and her fat octo-maid gal-pal to find a cure through centuries old magic that effectively creates a second Atlantis. Oh, and maybe they fall in love.