The bottle

At the end of the reqqa reef in 16m deep, there is a drop off that falls to 38m . Here you can get in a cave . The opening is only about 1.5 m in diameter. You can descent to 57m where you reach the sandy bottom of the cave. There is the exit of the cave . About 2m with 2.5 m formed as a triangle. You need a torch, it ist dark inside the cave. You can also start in 57 m and get out at 38 m. Close to reqqa.