Inferno Island is an island that only appears in the episode The Inmates of Summer. Inferno Island is a place which SpongeBob and Patrick accidentally go to while trying to go to Sun Fun Island. The boat to get there usually docks off of Bikini Bottom Dock & Shipyard, and is a prison boat. This ship carries prisoners. The island is built on and island and is a castle, whose windows are barred. It usually storms at the island. Inferno's Islands counselor is very mean, and serves tires for snacks. This island's keeper, Barney, is a fish who listens and approves of all of the counselor's demands.
The beds on this island are wooden bunk beds with no blankets. The pillows are made out of cardboard. There is a place where bad fish go to stay for three days. That is the hole. Although SpongeBob and Patrick find the hole to great liking, it is supposed to be very bad, SpongeBob and Patrick mistake it for a hot tub after three prisoners dump chum into it. You're actually not supposed to eat the chum, but SpongeBob and Patrick didn't know that.
 Members & Leaders
Inferno's Islands counselor is very mean, and serves tires for snacks. This island's keeper, Barney, is a fish who lightens and approves of all of the counselor's demands. There were many other prisoners on Inferno Island other than SpongeBob and Patrick, and those prisoners were much more devious than originally expected.