New Super Mario Bros.: 3-2

Oddly enough, there's a mushroom platforming level on the beach. This level features red mushrooms that tilt, making it easier or harder to reach some areas. Aside from some balancing platforms, it's just mushroom platforming up to the midpoint. Past the midpoint is a yellow pipe that takes us down to the first Star Coin. After returning to the main level, there will be two sets of balancing platforms. Hop over each of them quickly to reach the second Star Coin. There are three pipes overhead: red, yellow, and green. The green one leads to a Coin Heaven with a P-Switch creating Silver Coins. There is a red tilting platform that will take you to the red goal, leading to 3-B. If you do not go through the green pipe, you'll find another set of balancing platforms and Red Coins. Next is a mushroom and a large gap. Step on the mushroom to make it move. It will take you to the third Star Coin, which you'll have to jump for. The mushroom will take you to the regular goal to the Fort.