Lucice bay is located on the south-eastern side of the island, near Milna. This is the largest bay in this part, and is divided into five parts. Close to exit from the harbor,on just five meters depth, near the coast, there is the entrance to the underwater cave. It consists of two separate holes, a larger size is about three, and the smaller about two meters wide. Two divers can easily pass through it. Below the entrance wall of the cave descends vertically to the bottom with stone boulder. The pit consists of two rooms. The first is greater, and the other is smaller and deeper, and is located on the left side of the entrance. Except samson fish there are lobsters and a pile of sponges, polychaetes, which all their elegance show only when there is highlight. At the bottom there are stalagmites, and on the ceiling near the entrance siphon was discovered , which is wide enough that a diver can retract. Top siphon enters the land, so you can enter the room with the air.