Wavy Beach 5-9
From the Super Mario Wiki
The level starts off autoscrolling, and at the end of the area is a Warp Pipe. The next area has several sad enemies, and a Calm Amazing Flyin' Hammer Brother but a large portion of it can be bypassed, if the player uses the Joy vibe, and follows a line of coins. At the end of the section is another Warp Pipe. The next section is a platforming area with some Flame Wheels, partway through this section is an ! Block, that will remove a platform that is stopping access to the Puzzle Piece, and after this is the goal gate.