Larry's Torpedo Castle
From the Super Mario Wiki
Larry's Torpedo Castle, or Sparkling Waters-Castle, is the castle of Sparkling Waters in New Super Mario Bros. U. This course is unlocked via completion of Dragoneel's Undersea Grotto and its own completion unlocks the path to The Mighty Cannonship.
This castle contains moving fences, Burners, and Torpedo Teds. In the first room of the stage, the player has to climb moving fences and dodge the flames of the Burners. Next, the player goes in to a Warp Pipe which leads to a room filled with water and Torpedo Hasshadai. After dodging some Torpedo Teds, the player reaches a Warp Pipe. Inside the Warp Pipe is another water-filled room in which the player has to dodge some Torpedo Teds. Next, the player enters a Warp Pipe which leads to a short room with Rocket Engines and moving fences. After avoiding the flames of the Burners, the player enters a large blue door, launch out of a cannon, and proceed to fight Larry Koopa.
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