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If you were looking for the article about the episode, then see "Lighthouse Louie."
If you were looking for the article about the character with a similar name, then see Lighthouse Lass.
Louie (also known as Lighthouse Louie or Louise) is a snail who appears in the episode "Lighthouse Louie."
She is an elderly orange sea snail with a white belly, two small sharp teeth, and a greenish-gray shell with some barnacles on it.
Role in episode
SpongeBob finds Louie while cleaning out the lighthouse of Mrs. Puff's Boating School. Louie is friendly towards SpongeBob at first, even messing with him while SpongeBob tries to get him out of the lighthouse. They later start to fight, and it is revealed that she was just protecting her babies.