There will be a time limit of 100 seconds for this level, which might not sound like a lot, but once you know where everything is located, it’s plenty. Of course, there’s also clock pickups scattered throughout, in case you do need more time. Since the level is set in an open area, it’s possible to get the Green Stars out of order. To begin, dash all the way to the left, until you reach the little pit with the Koopa shells in it. There will be some ?-Blocks nearby, so hit the left one to get a Fire Flower. At the dock, quickly light all four unlit braziers to get Green Star #1. While you’re still there, you will want to defeat the Goomba Tower and the Fire Bro that’s on top of it.
To the left of the dock are some ?-Blocks, which will be Cannon Boxes, so get one for the rest of the level. Continue to the right to see a clear pipe, which you should take to appear on a cloud platform, with Green Star #2 right in front of you. As you keep going right, you will encounter more Goomba Towers in the water, so defeat them all, including the Fire Bros. Upon defeating the triple towers here, you should spawn a Warp Box in the water. However, at the right end of the level, you will find Green Star #3 on top of one final Goomba Tower. Take the Warp Box now, where it’s an easy jump to the top of the Goal Pole.