Bigmouth's Gold Bait
Mario starts off on the beach with a golden chest. He must take a Koopa Shell and swim through a hole blocked by bricks underwater. He then must collect Star Chips to create a Sling Star that will launch him to the water on the ceiling. Mario can also jump using the shell to reach the water on the ceiling. Mario must take the Golden Koopa Shell on the top area of water and take it back to the golden chest. On the way back, Boos appear, which can be killed using the shell's spotlight. Once Mario throws the Golden Shell at the chest to open it, the Toad Brigade Captain pops out. He gives Mario the Power Star that he found.