World 2-5 (New Super Mario Bros. Wii)
From the Super Mario Wiki, the Mario encyclopedia
World 2-5 is the fifth level of World 2 in New Super Mario Bros. Wii. This level has many Pokeys, and there is also a Yoshi in this level. The Pokeys turn into a fruit-like variant with the beat of the music, allowing the Yoshi to eat them completely.
At the beginning of the stage there are various Pokeys and Sand Geysers. There is one particular ? Block with a Yoshi Egg in it. Lakitu also makes an appearance here and throws Spinies, which can easily make the player's Yoshi fall in the quicksand. Later on, a Lakitu appears which makes getting the first Star Coin much easier. There are two yellow bricks towards the middle just left of the midway point. Falling between them leads the player to a secret cave containing the second Star Coin. Towards the end, five Pokeys are on the yellow bricks above quicksand, followed by two more Pokeys and the flagpole.