New Super Mario Bros. U: Sparkling Waters- Ghost House -- Haunted Shipwreck

This shipwreck is crawling with Boos, Fishbones, and item blocks that try to attack you. They will hit you if you stand still and can go into the water. They'll break if they hit something. If you need an item, go across the water and into the first wall. You'll have to jump up to enter that part of the wall, and there's a Boo there. Take the floating crates up and to the right. The door in the invisible area to the left is fake. Next is a series of poles. From the third pole, you may need to wait a while before a giant floating crate comes by. It will take you to the other side. You'll see a door. Drop a little below the floor for the first Star Coin, then go through the door. The door leads to a room with Fishbones and rings of Boos. Over the third Boo ring is the second Star Coin. Wall jump off the wooden boards to get it. At the far right wall, out of the water, is an invisible area with a door. It leads a room with a large wall, but that wall hides several areas that make a path. The third Star Coin is directly above the door, so go a little to the right to reach higher ground, then run and jump to the left to get it. A couple of places at water level have item blocks with power-ups. Be aware that there are a couple of Boos in the area. There are two paths out of here. Go all the way to the right and you'll see a door. It's fake, but there's an invisible block over it. Jump into the ceiling to find a hidden door. It leads to an empty room. Go left for a pipe to the regular flagpole. This opens the path to Sparkling Waters -3 and -4, as well as Pink Baby Yoshi. The other way out of here is about halfway between the third Star Coin and the door at the far right. As you go through the wall, you'll see a sign pointing to the right. Just left of it is a narrow gap. Wall jump up and to the left for a hidden door. This leads to a room with coins and a red pipe. You can see the green pipe to the regular goal on the other side of the wall. The red pipe leads to the red goal. This opens the path to Sparkling Waters-Leaf.