The path splits at Point 1. To collect the first Star Coin, follow the path on the right.
Climb the webs up to the Star Coin, then jump over and collect it.
The second Star Coin is sealed between the platforms at Point 2. The nearby ? Block contains a Super Star. When you collect this power-up, all of the platforms and walkways in the area turn into coins. Collect the Super Star while you’re standing near the ? Block, then drop though the Star Coin when the environment transforms.
To find the secret exit, collect the Super Star at the top of the area, then move to the right wall as you fall through the coins. There’s a small ledge at Point 3—stay near the wall to ensure you land on it. Follow the path to the right to find the secret exit. After you reach the Goal Pole, Flower-B becomes available on the Map Screen.
When you reach Point 4, a Boohemoth appears to the left. When you slow down to avoid hazards or collect items, remember to face this massive enemy.
The third Star Coin is under the stairs at Point 5. To collect it, you must move past the stairs, drop back into the water, and swim back toward the Boohemoth. This puts you in a fairly dangerous position, so be careful when you turn your back on the enemy.