I did the 'Great White Wall' and the 'Rainbow Reef' in 2006 and this is still my best dive I ever made. You start with the White Wall. Therefore you must be at least advanced because it's quite tricky in the beginning. The water where you jump of the boat is always rough but you need to wait for the time in between the tides - the tide change. For two reasons: First it's not that rough but still. Second and even more important, the 'White Wall' is only white when the time changes because only then the polyps of millions of white coral what makes it white are open (Otherwise they are unspectacular gray.). It is so magical. So when you go down you have to be faster than usual and you go deeper than normal so be warned of nitrogen narcosis what I got but I knew how to handle it and just hold my regulator to my mouth even though I felt after laughing. You dive through a beautiful gate down and end up in about 40m depth at the 'White Wall'. Wow. amazing... looked like a wonderland... the light from above is blurry already in that depth. Everywhere the white coral in the blue light. You dive along the wall and come back through another gate and then you basically end up on the 'Rainbow Reef'. Unbelievable seriously hundreds and hundreds of colors in all different colors... amazing. You might see few reef sharks. I never gonna forget that dive... For me it is unbeatable!