The Sea Witch

The Sea Witch is a character in The Little Mermaid fairy tale by Hans Christian Andersen. She is the witch that helps The Little Mermaid become a human so she can marry the prince. She lives in a house made of human bones with her sea snakes and toad. She makes the mermaid a potion at the price of her voice and if the mermaid doesn't marry the prince she'll die and dissolve into foam. She isn't seen again for the rest of the fairy tale but is mentioned by the mermaid's sisters when they give the mermaid a knife given to them by the witch to save The Little Mermaid from dying at the price of their hair.