S1·E20 Go Snails Go!

Nick, Sally and the Cat have been invited along on a snail expedition and they jump into the Thingamajigger and shrink down to meet up with Lewis and Clark, the two snails that lead the way... through the forest of Slippity-Goo (a place with fun sliding in their own makeshift shells), the kids learn about all the different ways snails use their shells.