The Sea Witch is a character who is part of the Smurfs cartoon show, first appearing in the Season 3 episode "The Last Smurfberry". She is the guardian of Smurfberry Island, from which smurfberries come. In the episode, the Smurfs arrive on the island to gather more smurfberries after Gargamel has destroyed all the smurfberry bushes in the Smurf Forest except for one which he replanted near his castle as a trap for the Smurfs. The Sea Witch saw the Smurfs as trespassers and demanded to know what they were doing, and as they explained their situation, Gargamel appeared and tried to make the Smurfs look like they were doing wrong. A smurfberry bird sent by Papa Smurf informed the Sea Witch about Gargamel and soon she had her seagulls go after Gargamel while allowing the Smurfs to leave her island with the smurfberries they have collected.
In "Smurf A Mile In My Shoes", she put a curse on an imp for insulting her. She wanted to make him lonely for the rest of his life and so, she turned him ugly and made him have a hideous voice. In order for the curse to be broken, the imp had to have seashells aligned along the beach. One of the Sea Witch's seagulls took a rare seashell away from the imp and so the Smurfs ventured out to get it back. When the Smurfs arrived soon after a seagull told the Sea Witch the Smurfs were there and she began her search. When she got to her lair, the Smurfs hid, and she noticed they were searching for the seashell and saw it was still there, so she went to search for the Smurfs. The Smurfs unhid and got the seashell and left as quickly as they could. The Sea Witch came back to her lair and noticed the shell was gone and she put a curse on the sea to make it stormy and wavy for the Smurfs.