Naval Piranha's Castle

Naval Piranha's Castle is a stage located in Yoshi's Island and found in the Yoshi's Island platform games. When you enter the level, Blue Yoshi will be in a jungle area at dusk with smiley mountains in the background. You'll go into the sewers using a pipe. In the sewers, you will encounter various enemies, including Blocker Ghosts and Aqua Lakitus.

The boss of this stage is a common Pirahna Plant that Kamek put an spell on it, to turn into Naval Piranha Plant.