New Super Mario Bros.: 3-1

World 3 is a beach level, so we'll have to deal with a lot of water. This is an underwater level. There are a lot of Cheep-Cheep in this level, including large ones and blue ones that home in on you. There is also a Red Coin Ring. Past the midpoint is a set of three pipes: red, green, and green. The outer two have currents and the middle one leads to the outside with the first Star Coin. Back in the main level, coins will start appearing in bubbles. The second Star Coin is between the yellow and green pipes with currents. Towards the end, there will be a P-Switch that will turn bricks into coins. Go left and through the new coins to get the third Star Coin. There's another set of Red Coins before the pipe to the flagpole.