Superhard Acrobatics!

Superhard Acrobatics is level 5-7 in Yoshi's Island DS. It takes place in the sky, and Yoshi has to jump over multiple moving platforms and spikes. Enemies in this level include Piranha Plants, Firebars, and Blow Hards. Yoshi also has to grab a star so that Super Baby Mario can run over spikes in a part of this level.

This level could be considered the most difficult one in the game, since getting 100 points on it involves Yoshi getting a single Red Coin found in some vines with Firebars, along with Baby Donkey Kong, and getting over the last part without losing a single star.

Trivia

 * The Japanese titles of KEEP MOVING!!!! from Super Mario World 2: Yoshi's Island (translated to "Very Hard Athletics") is similar in name to the Japanese titles of level ("Ultra Hard Athletics").