Advanced divers swim towards the cave entrance, which is 8m deep. The cave is a tunnel about 30 metres long and runs all the way through the protruding headland. As you enter the cave, look in the numerous holes in the wall for spiny lobsters.
As you swim further into the cave and daylight begins to fade, you see the rainbow of colours on the walls from the sponges and soft corals living there. Shining your torch around you will see dozens of transparent shrimps along the walls and roof of the cave, and if you're lucky you'll spot one of the sleek black catfish darting around, using your torchlight to find and eat the shrimps. Weaving in and out of huge pillars of limestone, you see daylight pouring in through the exit of the cave, which resembles a huge butterfly and makes for great photography to capture a diver swimming out into the deep blue. The exit is only 3m deep, but you'll find yourself on a wall 15m deep. Swimming down to the bottom of the wall and out to sea, you are over patches of reef and sea grass. Then in the distance, you'll see where this dive site gets its name; starting at 16m, huge expanses of brilliant white sand can be seen, literally glowing in the sunlight from above. Sloping gently downwards, the sand continues on to over 150 metres deep! You'll go up to 30m, before turning left and picking up a reef wall which is an extension of the cliff from the headland you just swam through. Following this wall back around in a semi-circle, you're likely to see some big grouper hiding near their holes in the wall and maybe some tuna and amberjack hunting out in the blue. Eventually you reach a channel formed between a surfacing rock and the cliff. It's about 12m deep and look carefully here because there's usually some big scorpion fish on the floor. You'll finish the dive by exiting the channel and making a safety stop close to the wall, before surfacing to find yourself back at the boat.
Open water divers swim along the outside of the rock mentioned just above. At 12m deep, you'll swim over a saddle of rock and into a valley formed by two huge undersea limestone walls. The floor of the valley is covered with limestone boulders encrusted with reef life, and the walls slope gradually downwards and outwards so the valley widens and deepens. In the valley, you can see grouper, moray eels and octopus, with shoals of parrotfish, wrasse and bream swimming just above. You'll follow the left valley wall along the top at around 12m of depth. On the top of the wall, pinnacles of limestone provide shelter which brings in scores of small fish and so often schools of feeding tuna and barracuda are seen darting in and out of the pinnacles. You'll follow the wall down to 18m where you'll cross to the other side and follow the right wall back up to a depth of around 8m. Here, you'll see another saddle which takes you into the channel between the surfacing rock and cliff wall described above. You'll follow the channel to its end, where you'll make a safety stop before surfacing next to the dive boat.