From the Super Mario Wiki
Waterspout Beach, or Sparkling Waters-1, is the first course of Sparkling Waters in New Super Mario Bros. U. It is unlocked via completion of Morton's Compactor Castle, and its own completion unlocks Tropical Refresher. Waterspout Beach is based off Course 3 of New Super Mario Bros. Mii.
Water Geysers constantly rise from the waters below and create platforms for the players to stand on. Additionally, players can use Ice Mario to freeze Huckit Crabs and toss the frozen foes across rising Water Geysers to collect coins or Star Coins.
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