Location: Fog Canyon (Teacher's Archives)
Uumuu is a giant jellyfish that is initially invulnerable. You must wait for Quirrel to intervene, creating openings by popping the smaller jellyfish that surround Uumuu. When Uumuu is vulnerable, unleash your Nail and spells. Focus on dodging its electrical attacks and staying alive until Quirrel creates an opening. Reward: Access to Monomon the Teacher.
