World 4 (New Super Mario Bros. Wii)

World 4 is the fourth world of New Super Mario Bros. Wii. It is a beach world and consists of solely a plethora of platforms and an enormous tank of water. Surprisingly, this is the first world to host an Airship from Super Mario Bros. 3.
The Penguin Suit is of paramount use here, as it will allow Mario to glide over the water and will allow Mario's swimming to improve dramatically.
==Levels==
*World 4-1
*World 4-2
*World 4-3
*World 4-Fortress
*World 4-4
*World 4-Ghost House
*World 4-5
*World 4-Castle
*World 4-Airship
de:Welt 4 (New Super Mario Bros. Wii)
es:Mundo 4 (New Super Mario Bros. Wii)
fr:Monde 4 (New Super Mario Bros. Wii)
fi:World 4 (NSMBW)
Category:Worlds in New Super Mario Bros. Wii
Category:Underwater-themed
Category:Beach-themed