World 3 in Yoshi's Island DS is set in a tropical beach area, which later becomes a desert cavern. The two bosses of World 3 are Bessie Bass and Priscilla the Peckish. The Yoshis meet Baby Wario in this world, who joins at the start of level 3-5 and accompanies them throughout the rest of the world. At the end of the world, Baby Wario leaves the party and joins a group of Bandits.

Level info[edit]

• 3-1: Up the Creek – This level is centered around using a raft to avoid a Lunge Fish, and progressing up a waterfall.
• 3-2: The Goonie Coast Isn't Clear! – Pirate Guys are found in this level, as well as Goonies which appear in the sky. Bloopers also debut in this level.
• 3-3: Island of Peril – This level mainly involves using pipes to advance through the level. The end of the level is identical to the beginning, though set at nighttime.
• 3-4: Bessie Bass's Battleship – This level takes place inside a very large pirate ship. Bessie Bass is the boss.
• 3-5: Heeeeeeere's Wario! – This cave level introduces Baby Wario. Yoshi needs to use Baby Wario's magnet to attract objects and advance through the level.
• 3-6: Use the Magnet to Get Rich Quick! – The majority of this level is contained within a jungle environment. Baby Wario is able to use his magnet to get coins.
• 3-7: Tap-Tap's Sunken Cave – This level is taken place in a subterranean environment, featuring many Tap-Taps.
• 3-8: Castle of Priscilla the Peckish – This level takes place in a castle. The level features waterfalls which can push Yoshi downward, hindering his progress. The boss is Priscilla.
• Secret 3: A Light in the Dark – A level where Yoshi has to go through a maze-like castle in the darkness. What follows is a ski section in the dark mountains, and finally, a rocky shore with Crabbles.
• Extra 3: Number Ball Special – A level which takes place in an underground labyrinth where Yoshi must find Number Balls and put them in their respective slots. This is one of the two levels with the tall Gargantua Blargg.