I agree with the production costs thing... Plus imagine if you are doing a movie on all mermaids... How are they supposed to talk? Not underwater. So in order to have a movie focusing totally on mermaids (that isn't animated), the mermaids have to have a reason to be above the surface most of the time. In books they can be psychic or whatnot, but that doesn't work for movies. So on top of extra production costs, there's the difficulty of having dialogue. You simply can't film 90% of a movie underwater without some SERIOUS work because the actors are going to have to be voiced over like cartoons.

I also agree that mermaid culture is booming right now. Hence the banning at the pools!

I think the poll needs an "other" choice, because I can't select any of those to answer the question really.