World 4-4

Coin 1 (after checkpoint)

After the checkpoint, hit the P-Switch on the ceiling to disable the pipe-streams ahead. Now quickly follow the trail of blue coins into the yellow pipe just ahead, before it starts spewing water again. After warping, grab a Penguin suit from either box and use it to freeze the Cheep Cheep, allowing you to use its frozen body as a platform to reach the coin.

Coin 2 (after checkpoint)

You can't miss the second coin, shortly after the first.

Coin 3 (after checkpoint)

Look for a hidden area inside this wall, just before the level's exit pipe.