Henry is reading his picture book about all the strange fish that live in the ocean and tells Ella that he'd like to be a deep sea diver. But because they don't live near the sea, they decide to put on their goggles and flippers and just play at being deep sea divers in the bathroom. Ella's dad soon suggests that they go outside to play. Everyone they meet in Sunshine gardens ends up getting wet but, still they don't find any fish. That is, until they all go to dry off in the basement, and it reminds Ella of being under water. What does she mean?