World 3-C

World 3-C is the third secret level in World 3 of New Super Mario Bros. The level is accessed by completing World 3-B, and completing this level leads to

Layout
In this level, the Spike Bass returns. Mario must jump onto the wooden logs (some of the logs fall when stepped on) while avoiding the Spike Bass and the flying Cheep-Cheeps. They will all jump into the air. The first Star Coin is found by going under the logs into the water, then jumping onto the coin. This is also how the second Star Coin is obtained. Mario can get the last Star Coin by going through a Red Pipe (the player must run and jump to reach it) near the end of the level. After the coin is the Flagpole.

Star Coins

 * Star Coin 1 - Use the falling platforms to reach this Star Coin. Be careful with the Spike Bass.
 * Star Coin 2 - After the checkpoint, the Star Coin is below a rock formation. Mario or Luigi will need to go underwater and under the formation while avoiding the Spike Bass. Killing the Spike Bass will make this coin a lot easier to get.
 * Star Coin 3 - After hitting the P-Switch, run all the way to the right of the level and jump into the red pipe. Mario or Luigi will fall on the Star Coin and appear next to the flagpole.

Enemies

 * Goomba
 * Koopa Troopa
 * Koopa Paratroopa
 * Cheep-Cheep
 * Spike Bass