- Star Coin 1: When entering the underwater part of the level, jump on the three platforms and jump to the Star Coin.
- Star Coin 2: After passing the poles near the former spot of the first Star Coin, swim underwater under the three same-sized spinning platforms to get the Star Coin that moves under the platforms while avoiding the Spiny Cheep-Cheeps.
- Star Coin 3: Jump on any of the last three spinning platform (or the last pole in the area) to get the Star Coin over the second to last spinning platform.
Hidden Luigi image
When entering the pipe leading into the ship, go underwater and swim to the left wall which shows a picture of Super Luigi from Super Mario Bros. swimming.
When reaching to the green exit pipe leading to the original, go under water and avoid the Spiny Cheep-Cheeps to find a secret red pipe by the right wall leading to the hidden flagpole. The flagpole leads to Sparkling Waters-Secret: Beanstalk Jungle.