Naval Piranha's Sewer
The level begins with a single warp pipe, which leads to a sewer area with Wild Ptooie Piranhas and Piranha Plants. After a while, Yoshi will encounter a Stalking Piranha Plant, followed by a Piranha Plant and another Wild Ptooie Piranha before coming across an edible blue warp pipe. Almost immediately afterwards, Yoshi will be brought through a long waterfall to a door leading to the first checkpoint. After a long segment containing Spinners and Stalking Piranha Plants, there is a warp pipe that leads to a vertical area with Spring Balls and more Wild Ptooie Piranhas, as well as a few Bomb Guys. The second checkpoint appears soon afterwards, as well as a rainbow assortment of warp pipes. A labyrinth of warp pipes follow. At the end of the labyrinth, a giant Spring Ball takes Yoshi directly to the boss door.
Collecting all of the Wonder Wools knits Naval Piranha Yoshi back together.
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