Starfish are not really fish! They are invertebrates because they have no backbones like sea urchins and sand dollars. Most starfish have five arms but can grow up to 50 arms. If you like this Starfish coloring page, share it with your friends. Color your Starfish online or print to decorate at home. They will love these coloring sheets from SEA ANIMALS coloring pages. Find your favorite Starfish coloring page in SEA ANIMALS coloring pages section.