I lovve this film, and think its way underated.
so my propolsal:
They ( the same team, the sisters could be played by the same actresses.) and ryan kwaten could play the sea cop.
that way it would get more pulicity!
Let me see your teeht!
I`m a proud tangler!
Thats right I`m a frogger!
....
Pineapple!
I would have just written one mermaid and yes, she is beautiful but mermaids are deadly when they need to defend themselves. Like on land, they have temperary strength but in water they have fangs, claws and they can tear people apart.
I had this idea for a story based a bit of the Little mermaid tale, mermaid saved a man (a navy seal or marine haven't decide which), he was investigating some damages to new weapons that are suppose to help protect our country from threats through sea waters but it is deadly to the marine life. A mermaid who would rather be a warrior like the mermen rebels against her merfolk customs and saves the man and they decide to work together to saving the sea and keeping the peace balance between humans and merfolks.
It is still a working progress and I am not sure if I will have it publish.