Random Characters/I'm a Rock (from Muppet Sing-Alongs: Muppet Treasure Island)

Cast

 * Spike (from My Little Pony: Friendship is Magic) as Polly Lobster
 * Rex (from Toy Story) and Billy (from Chuck E. Cheese) as Clams
 * as Fish
 * Bertie (from Thomas and Friends) as Shark