Strategy:
Morpha is a parasitic amoeba that controls a giant water tentacle. Stay on the platforms around the edge of the room. Morpha's core will occasionally emerge from the water tentacle. Use your Longshot to grab Morpha's core and pull it onto the platform. Once on the platform, attack the core with your Master Sword. Avoid being hit by the water tentacle, which can push you into the water. Repeat until Morpha is defeated.
