Board Thread:Spoilers!/@comment-24968347-20150223133450/@comment-24674051-20150323134839

Or, Ariel is simply a mermaid, no special importance or family. She just happens to have a soft spot for humans and their trinkets. And she is married to a Prince.

In the Once Universe, it actually seems that the ground is laid for Ursula and Ariel to be friends, if they ever want to go there.