Red Coins on the Half Shell

Red Coins on the Half Shell is the bonus tenth episode of Noki Bay in Super Mario Sunshine. It can be accessed by replaying The Shell's Secret.

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Returning to the secret course in said episode will allow Mario to use F.L.U.D.D. and do a Red Coin challenge. After the first set of moving platforms is a Red Coin Switch and Ground Pounding it will cause eight Red Coins to appear throughout the course. The player needs to collect them all within a time limit of one minute and thirty seconds to earn a Shine Sprite, otherwise Mario will lose a life. The locations of the Red Coins are:
 * On the wall next to the switch.
 * Over one of the sliding platforms.
 * Next to the slope with arrows.
 * On the end of the wall over the slope.
 * On the wall with the window.
 * Over the following set of platforms.
 * Just before the first rotating log.
 * After the first rotating log.