Twirlywoos

The Twirlywoos are on a beach, where they watch a couple of children building a sandcastle. When the children run away to join their parents, the Twirlywoos come out and start to add more sand to the sandcastle. They get carried away and build a huge sandcastle, which towers over the kids and their parents when they return. Peekaboo brings a strange jelly out of the hole in the wall which gets bigger each time someone touches it. When the Twirlywoos return to the boat, they investigate, and cause the jelly to get so big that it fills the entire boat!