Hot-Air Balloon Yoshi
From the Super Mario Wiki
Hot-Air Balloon Yoshi, also known as simply the Hot-Air Balloon, is a form the Yoshis can transform into in Yoshi's New Island by entering a Whirly Gate with a balloon sign on it. It is similar to Balloon Yoshi found in Yoshi Topsy-Turvy.
In this form, the Yoshi can float upwards and can move left and right with the or by tilting. Like all forms in this game, it lasts for a limited time, but clocks scattered about the obstacle course can provide the Yoshi with more time. Some propellers found within the course can blow the Yoshi and make it easier to get to a different area. Going through a ring will revert the Yoshi to his normal form.
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