World 6-3 (New Super Mario Bros. Wii)

In this level, there are Super Piranha Plants, Stalking Piranha Plants, and Buzzy Beetles. The course is a network of Warp Pipes with raising and lowering platforms which the Super Piranha Plants are on top of. Some switches raise and lower the level of the water.

Star Coins
Star Coin 1: Just above the third rising/falling platform with a Big Piranha Plant. A power-up is required in order to take out the Big Piranha Plant, and the platform can lift the player right to the Star Coin. Star Coin 2: Right next to the fourth rising/falling platform with a Big Piranha Plant. Once again, the player needs to take out the Big Piranha Plant. Star Coin 3: A Super Mushroom is required for this one. There's a row of bricks to the right of the first upside-down Big Piranha Plant. The player must break through them and wall-jump through the opening. Not long after, the player will come out of a pipe with the Star Coin.

Enemies

 * Piranha Plants
 * Super Piranha Plants
 * Stalking Piranha Plants
 * Buzzy Beetles