Minor/Major Project: River Mumma - Influence and Initial Sketches

River Mumma influence map.

Colourful fish found in Jamaica. 

I've always pictured the River Mumma to have a similar appearance to a human female on land, but take on a fish-like appearance underwater. Seeing as they'd usually be spotted from the distance, the River Mumma would appear with dark brown skin and be combing her hair (sometimes using seaweed to imitate hair, if needed), then would descend into the water to entice her victim. Underwater, the River Mumma would change colour to match the colourful tropical fish found in the Caribbean, though her victim wouldn't notice until it was too late.

Rough ideas of how the River Mumma's bodies would look. Number 3 is based on a tiger shark, while the others are more mermaid-like or simply human bodies with webbed hands and feet. I imagine the fins would lay flat to the body on land, and raise from the skin in water to aid swimming. Any feedback on these sketches would be helpful!