It is difficult to describe the beauties of diving besides a coral drop off.  Colourful coral and reef fishes hovered round the coral walls against a vivid blue background of deep sea water.  It was a veritable fairyland and enough to excite the senses.  No picture is sufficient to convey the exhilaration of scene.  It was completely silent except for the bubbles of our exhalations from the breathing regulator and the feeling of weightlessness 'breathtaking'.