Pierre the penguin had a problem with his feathers leaving him with bald patches. Unfortunately, penguins need their waterproof fathers to keep warm whilst in the water. This meant Pierre would sit on the side of the penguin tank shivering whilst the other penguins played in the water. Pierre now has a special penguin wetsuit which is designed to keep him warm but has openings for his flippers so he can still swim. It also allows his feathers to grow back at the same time and he can play happily with the other penguins.