World 3-1

Go right and hit the first block to get a Leaf.

Jump on the flying Cheep Cheeps to defeat them.

Activate a gold ring to cause coin trails to follow Cheep Cheeps.

Bounce off a Cheep Cheep to reach Star Coin #1, which is high above three barrels floating in the water. This may be easier as Raccoon Mario.

Ahead, hit blocks to find a ? switch.

Hit the ? switch and coins will pour out of the pipe up ahead; grab some.

After reaching the Checkpoint (a save point), you will see platforms rotating in the air with a Piranha Plant in the pipe above.

Wait for the Piranha Plant to hide, then wall jump into a hidden alcove above to find Star Coin #2.

Drop back down to the platforms and continue right to a bonus coin block and barrels floating between pipes.

Stand on the rightmost barrel; it will sink, allowing you to collect Star Coin #3 behind it.

Activate gold rings for a greater coin bonus via Cheep Cheeps as you head towards the end.

Enter the pipe at the end of the path.

Jump up the blocks to the top.

Bounce on a Cheep Cheep to reach the top of the flagpole, ending this stage.