Night Tide (1961)

On leave in a shore side town, Johnny becomes interested in a young dark haired woman. They meet and he learns that she plays a mermaid in the local carnival. After strange occurrences, Johnny begins to believe that she may actually be a real mermaid that habitually kills during the cycle of the full moon.

Night Tide is a horror movie featuring Dennis Hopper.

Night Tide is currently streaming for free (ad-supported) on Cineverse, Crackle, DistroTV, Kanopy, Plex, Plex Player, Popflick, Shout! Factory TV, The Film Detective, The Roku Channel and Tubi TV and it's also available on Amazon Prime Video, Classix, Cohen Media Amazon Channel, Cultpix, Fandor Amazon Channel, FlixFling, MUBI, MUBI Amazon Channel, Screambox, Screambox Amazon Channel and fuboTV.

It is also possible to buy Night Tide on Amazon Video, Apple TV, FlixFling and Kino Now.