Let's find out about shells with Kit and Pup! Kit is building a sandcastle using small shells she has found on the beach. But how many other types of shells can she and Pup find on the sand? Through their adventures Kit and Pup find that shells come in lots of different shapes, can be bumpy and can be a home to animals. In the live action investigation a little scientist looks at a collection of shells and identifies the biggest, smallest and matching pair of shells, and in the material world a little explorer waves from the top of a large conch shell.