We recently received a FaceBook message from a very happy customer to Ocean Leisure, who told us what a godsend the reef hook we had suggested was. He had called by on his way to the Sudan and equipped himself with all the underwater photography equipment he needed as well as a lot of new scuba diving equipment. As usual we asked him where he was going and on hearing that he was joining a member of the Cousteau family on a trip we suggested he took with him a reef hook.The water that forces itself over the deep water tongues of each reef in the Sudan can be forced to speed up just as the air over the top of an aircraft's wing has to increase its velocity resulting in often strong currents. Places like Sha'ab Rumi are famous for this phenomenon and that is what encourages the sharks. Requiem sharks need forward motion to force water through their gills in order to breathe. If they find a place with a strong current, they can relax in the flow letting the forces of nature do the work for them. It's not unique to the Sudan. Water forces its way into the channels of the Maldives, through the passes of the Tua Motos in French Polynesia and between the islands of Indonesia as tidal differences in the ocean affect the height of the water within the lagoons of atolls of the water levels in the minor seas to the north of the Indonesian archipelago. Among many other places, Palau has some powerful current points like that at Pelelui Cut and Blue Corner too. We should not forget the diver's flavour-of-the-year, the Dampier Strait in Raja Ampat, either. It can make scuba diving arduous but many divers think it's worth the effort. Why? Because once you have swum down and located yourself at the point on the reef wall where the action is to be found, you merely need to cling on and watch the show. Of course, clinging on to a coral reef is to be discouraged thanks to the damage it does. Even if you were able to cling on to bare rock as one can in the waters of Cocos or the Galapagos, you'd need a strong pair of leather gloves if your hands are not to be torn. Gloves more often used by sailors are appropriate. Neoprene diving gloves get ripped to pieces within a few dives. Better still, why not avoiding touching any surface altogether? That's where the reef hook comes into its own. You simply hook in to a suitable area of rocky substrate and allow yourself to be pushed back by the flow of water. The reef hook is at the end of a length of line that is hooked to a strong part of your BC such as a suitable stainless steel D-ring. A little bit of air added to the BC gives to enough buoyancy to fly like a kite above the reef and you hover there comfortably while you watch the sharks and other fishes putting on a show. When it comes to time to go, you simply pull yourself down the comfortably braided line and unhook, not forgetting to dump that buoyancy air from your BC before you are swept back into the channel behind you or into the lee of the reef. A reef hook is an inexpensive item of kit that is stowed in a BC pocket forgotten until you need it. If you are going anywhere that currents are featured, we certainly recommend it. If you've enjoyed reading these blogs, you will enjoy reading Amazing Diving Stories by the same author.