Sparkling Waters is the tropical third world in New Super Mario Bros. U. This world is to the east of the grassy first world, Acorn Plains , southeast of the sandy second world, Layer-Cake Desert , south of the snowy fifth world, Frosted Glacier , west of the jungle themed fourth world, Soda Jungle and the mountainous sixth world, Rock Candy Mines , southwest of the cloudy seventh world, Merinue Clouds and the lava themed eighth world, Peach's Castle. Larry Koopa and the third Boom Boom are hiding here.