Movies about mermaids, mermen and/or other aquatic humanoids

I want to get back into watching these kind of movies, there are a lots of titles I probably missed growing up. A mermaid, merman, water nymph, ningyo or anything that lives in the water and looks humanoid really, should be an important part of the movie. I'm fine with horror as long as it's not a gorefest (so don't suggest Mermaid in the Manhole please). It can be lighthearted or series the only thing I ask is that the movie is enjoyable as an adult.

Movies I've watched:

• The Little Mermaid ( 1975)
• The Little Mermaid 1&2 (Disney)
• The Thirteenth Year (1999)
• She Creature (2001)
• Ponyo (2008)

I've seen H2O- Just add water! and Mako Mermaids as well, if that helps.