World 3 (Yoshi's Island DS)
From the Super Mario Wiki
World 3 is the third world out of the five worlds in the game Yoshi's Island DS for the Nintendo DS. The first half takes place in a tropical beach area, and the second in a desert cavern area. The bosses of World 3 are Bessie Bass and Priscilla the Peckish. Also notable about World 3 is that it is where Yoshi and friends meet Baby Wario, who joins the party at the start of stage 3-5 and accompanies them throughout the rest of the world. However, at the end of the world, Wario leaves the party and joins a group of Bandits.