Wario Land 3: Part 35: The Volcano's Base (Blue Chest)

After discovering a new opening in The Volcano Base, Wario enters an underwater area where he must avoid bubbles to reach the Blue Key. He then transforms into Vampire Wario and later Bat Wario to fly out of the cave, with water removing his vampirism. Exiting the cave leads straight to the Blue Chest, where he finds the Red Tusk. Together with the Green Flower and Blue Tusk, Wario gathers their powers, causing the volcano to erupt and unlocking the new levels The West Crater and The Colossal Hole.