Yoshis gain this ability by touching a Morph Bubble. Being affected by the Yoshi Mole Tank, Yoshis can dig through soft ground, and driving through walls and the ceiling. To move while in the Yoshi Mole Tank, the Directional Pad is used to move left, right, up or down. Yoshis can use the Yoshi Mole Tank to fit into small openings they could normally not reach.
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