There’s an other seaquestria girls mermaid versions of these girls made by the same artist on DeviantArt.com. take a look and put them on here please.

Despite how menacing Sunset looks right now, I bet she sings like an angel.

Sunset found yet another mirror to another world. This one to ‘Under Da Sea’. During her stay in “Mermestria Gills” world, Sunset met Chrysursula, who tried to coax her to make a deal wherein Sunset could get her legs back if she could convince Prince Flash Sentry, the cute but generic landlubber, to marry her. Unfortunately for Chrysursula, Sunset had seen this movie, and immediately double-crossed the hag, usurping her power and becoming an oceanic power in her own right. …Then she got bored and went back to the high school.
 
Yes, it was mostly because she didn’t like the piscene version of “sex”; even human was better than that.

Sunset, pick a species and stay with it.