|The Secret Aquarium|
|Coins||56 ( ×40 • ×8)|
The Secret Aquarium is a secret stage accessed by entering the hole in the wall on the right side of the JRB room. It consists of a room fully filled with water; it contains 40 yellow coins that can be used to refresh Mario's air. There are also 8 red coins that must be collected to spawn the star. It is the only stage to have an (albeit implicit) time limit, as you cannot surface and there are a limited amount of coins you can use to refresh your air.
|4 coin rings around 4 of the red coins||32|
|Another coin ring above the star marker||8|
|8 red coins||16|