Club Shell
Club Shell is a club in Bikini Bottom. It just appears in the episode, Shellback Shenanigans. As the title says, the club is for snails. The location is at the Goo Lagoon. It is a small island. Plankton, in disguise, told Gary to go to Club Shell.
Looks
The island has grass all over it. In the middle of the island, there is a small swimming pool. There are also chairs and trees on the island.