Host Jesse Palmer is aboard a summer cruise, and he's in awe of the elevated water ride on the ship. Inspired by the ride's inner tubes, he tasks the bakers with creating giant, colorful inner tube cakes. Then, Jesse docks for a day trip on an island where snorkeling is popular, so the bakers make snorkeling lagoon cheesecakes with underwater objects that judges Carla Hall, Duff Goldman and Damaris Phillips can see through a layer of gelatin.