Ant Lion is the 22nd Advanced floor in Monkey Ball and Super Monkey Ball, as well as the 51st Advanced stage in Super Monkey Ball Deluxe. It also appears as the 91st Ultimate stage with continues and the 111th without continues.
This stage does not resemble or look like an antlion. It instead appears as a square platform with a hole and a wall near the start and goal. There are two banana bunches and one banana in between them. With its funnel-shaped depth and hole in the middle, rely on the angle in which your monkey is rolling. To prevent easy goal entries, there is a wall placed in between the starting position and the goal.
To get to the goal, keep your balance on the tilted wall near the hole. And once on the other side of the wall, roll straight up, and go into the goal. Try not to get too close to the edge, or else you may fall off the floor.