Red Coin Field
The Red Coin Field, also called Pipe Down #1, is a secret minicourse in the game Super Mario Sunshine. It is accessed in the northwest of Delfino Plaza via Warp Pipe. Although it is possible to reach the pipe with the Hover Nozzle, Turbo Nozzle, or Yoshi by jumping on the high trees leading up to the pipe, it is easiest to get there with the Rocket Nozzle.
Once inside the pipe, Mario must collect the eight Red Coins throughout the field. One Red Coin is on a brown structure. Mario can obtain another four coins by defeating the two Sanbo Heads and two Seedy Pods that pop out of the dense grass. It is possible to knock the Sanbo Heads off the field, resulting in Mario being unable to get their red coins and having to redo the level. There is a Pianta that has caught on fire and is frantically running around the area; once Mario puts out the flames on him, he is rewarded with a red coin. At the top of the level, Mario can find a red bird. This bird will drop a red coin when doused enough with F.L.U.D.D.. There is a Watermelon Block placed next to a square hole near the edge of the field. Ground Pounding it or simply jumping into the hole results in discovering a secret alcove in the field where the last red coin resides. Mario will then be able to get to the Shine Sprite.