Pool

The Pool is a location in Luigi's Mansion 3. It is found in the Fitness Center on the thirteenth floor of The Last Resort. It is east of the Shower Room, north of the Gym Lobby, and west of the Pool - Back Access. Johnny Deepend is fought here.

When Luigi first enters the Pool, Johnny Deepend throws a water polo ball and the battle begins. Luigi must send Gooigi to reach the wheel where it drains all the water from the pool. After the water is drained, Luigi can enter the Pool while Johnny Deepend is stuck, allowing Luigi to capture him to obtain the fourteenth floor elevator button from him.

There are towels, blocking the entrance between the Pool and the Pool - Back Access, filled with Hearts, where Luigi can use burst to get rid of the towels to obtain the Hearts and unblock the entrance at the same time.