Mole Tank

Mole Tanks are mole-shaped tanks that a Yoshi can transform into in Super Mario World 2: Yoshi's Island by touching a Morph Bubble with its picture inside.

The Mole Tank can dig through soft ground and can be rotated into four directions (up, down, left and right) with the D-pad. One of its main advantages is its ability to drive along walls and the ceiling without falling down. It is also smaller than a regular Yoshi, enabling the tank to fit through small openings.

Mole Tanks reappear in Yoshi's Island DS. Yoshi morphs to a Mole Tank after eating a Morph Bubble in volume 14 of the Super Mario-Kun. This allows Yoshi, Mario, Baby Mario, and Luigi to dig underground. While underground, Kamek gives the Mole Tank a beating with his hammer. Unlike in the game, the Mole Tank power-up stays for a set period of time and does not transport Yoshi back to where Yoshi got the Morph Bubble.

Trivia

 * Despite the Mole Tank's official artwork being yellow, the Yellow Yoshi never gets the opportunity to morph into this type of vehicle.