Treedome Sandy cheeks Spongebob squarepants

Treedome Sandy Cheeks is a climate-controlled dome with an airlock that allows Sandy to live on the bottom of the Pacific Ocean. the only place in Bikini Bottom filled with air, not water. first appeared in the episode Tea at the Treedome. Patchy reveals in Bikini Bottom's Up Tour that Sandy's tree dome "was built for him by his friends at NASA.