Turtle reef in my opinion is the best shore dive in Grand Cayman. I've heard everyone talk about the mini wall which I've dove both north and south. They are both great dives. When I was there I asked one of the dive tech employees about the big wall. He told me that only about 5 percent of the people who come to turtle reef go out to the deep wall therefore it had been well preserved. He also told me it was quite a swim, and it was. But, believe me its well worth the swim. What I decided to do was swim out at an angle from my entree point to the northwest till I came to the deep wall which is across a sand bar from the mini wall. I did this snorkeling on the surface. Most of the people will dive the mini wall and decide to go across the sand bar to get a glimpse of the big wall. By the time they get there they are out of air and tired. This is why I recommend snorkeling out the deep wall then dropping down. When I dropped down to about 80 ft, all I could see was massive coral formations in front of me on the edge of this wall. Basically what you had was a mountain of coral and you'd have a sand chute between each coral formation. It looks like a mountain range as far as you could see along the wall. The coral and fish life was excellent , (best I've seen). If I were going to Cayman and I am on July 23-31st by the way, and if I could only do one dive while I were there it would with no doubt be the deep wall at turtle reef. I hope this will be informing and helpful to all. Good diving to all.