Wario Land 3: Part 61: The Stagnant Swamp (Blue Chest)

Using the Explosive Plunger Box from Beneath the Waves' Gray Chest blew up the Bomb Blocks in The Stagnant Swamp, allowing you to progress further through the room. You can then get stung and use Puffy Wario to reach the Blue Key above the new opening, and again use this form to reach the Blue Chest. The Blue Chest contains the Eye of the Storm, a tornado‑themed eye that you can harness.