Descend by some parasol Waddle Dees then enter the door in the water. Pipes form current that could push those in it towards the spikes. Enter the next door to battle a jellyfish known as Master Green. This jellyfish attacks by throwing lightning bolts and stars. Swallow the stars and knock them back to attack. If the jellyfish hits the turf hard, it creates a shock wave. Keep your distance from it as it will unleash electricity from its own body. Defeat Master Green for the Spark ability and Kine the fish will be free. Switch to Kine to make it easier to swim. Go back to the current room and swim through to find the door below. In a dark room, use the Spark ability to light the room up. You’ll see a few enemies ahead then find the next door. Back outside, continue ahead and you’ll find the goal.