Secret Levels are a type of level in Super Mario Sunshine. In most of these levels, F.L.U.D.D. is taken away by Shadow Mario, and Mario must rely on his acrobatic skills. most of these levels are noted by players to be extremely difficult, most notably The Shell's Secret and the Secret of the Village Underside.
Notable obstacles
- Red and Blue platforms that rotate constantly. The red ones rotate, followed by the blue ones.
- Long square blocks that rotate with colored pegs on them. Mario must avoid the pegs while avoiding falling off.
- Colored cubes with glass that rotate or move.
- Blocks of sand that crumble when Mario stands on them, regenerating shortly after.
- Moving blocks that look like Yoshi Eggs.
- Orange blocks with no special function except moving.
- Star shaped platforms that spin.
List of levels where F.L.U.D.D. is taken away
| Image | Episode Name | Level | Summary |
|---|---|---|---|
 |
Episode 3: |
Bianco Hills | In this episode, Mario must find a cave and complete a secret level. |
 |
Episode 6: |
Bianco Hills | In this episode, Mario must find a cave while the lake is dirty and complete a secret level. |
 |
Episode 4: |
Ricco Harbor | |
| Episode | Gelato Beach | ||
| Episode | Pinna Park | ||
| Episode | Pinna Park | ||
| Episode | Sirena Beach | ||
| Episode | Sirena Beach | ||
| Episode | Noki Bay | ||
| Episode | Pianta Vollage |
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