- Country: Montenegro, Serbia
- Genres: Drama, Fantasy, Horror, Thriller
- Release: 2014-05-01
- Director: Milan Todorovic
- Writers: Marko Backovic , Barry Keating , Milan Konjevic
- Language: English | Serbian
- Stars: Kristina Klebe , Franco Nero , Natalie Burn , Dragan Micanovic
- Runtime: 94 min
- Awards: 1 win.
- AKA: マーメイド NYMPH (Japan) , Nymph (Philippines) , A Sereia Assassina (Brazil) , Nimfa (Poland) , Nymph - Mysteriös. Verführerisch. Tödlich. (Germany) , Nymph , Killer Mermaid (Canada) , Mamula (Serbia) , Dark Sea , Killer Mermaids (United Kingdom) , Нимфа (Bulgaria) , Nymph (Australia) , Sirena ubojica (Croatia) , Мамула (Russian Federation) , Mamula A Sereia Assassina, Dark Sea, Mamula, Nimfa, Nymph, Nymph - Mysteriös. Verführerisch. Tödlich., Sirena ubojica, Мамула
- Plot: Two American girls travel to Montenegro on vacation to visit an old friend. While they're there they decide to venture to Mamula, an abandoned military fortress located on a remote island. During their exploration of the fortress they discover that they are not alone. Someone else is on the island with them and he will stop at nothing to protect it's secrets. There is a darkness hidden beneath the island and the terror has just begun.
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