Watch Mermaid Down (2019) HD Full Movie Free on solarmovie.do. Watch Mermaid Down (2019) online free. A mermaid is ripped from the Pacific, her tail is chopped off and she's thrown into a mental home wh...A mermaid is ripped from the Pacific, her tail is chopped off and she's thrown into a mental home where no one believes she is a mermaid.