Head in the Water, Feet on the Ground (Otter TF)
Many called them mermaids, but never before did he hear of demons appearing before the dead of a river. perhaps he had lived his life in error...perhaps he was to be punished for some vile existence he could not recall.
Kamen Rider Wild: New Age
As soon as she hit the water, her fans snapped back into fins, and her coattail expanded and clamped around her legs to form a mermaid-like tail. her more aquatic form allowed her to rocket towards the rapidly sinking dragonov.