roakey:I dive at the aquarium in Denver, Colorado in an exhibit with about a dozen sharks: two Sand Tigers (which we refer to as "Gray Nurses" since the area of the world that the exhibit represents is the Indio-pacific, and that's what they're called there), two Sand Bars, four Zebras (my favorite shark) and about six Nurse sharks.
Oh, and one very large sawfish, which isn't really a shark but it's close
I like your shot of the overbite, that's my favorite view of the Sand Tigers!
Roak
There was an angel shark in there as well. Even got to stroke it as it lay in the sand. Very weird skin. Could feel all the denticles on it. Sandpaperish. Managed to get close and touch one in the wild a few years back on a try dive in Lanzarote as well. Except this one took exception and buggered off into the blue after we had stroked it a couple of times. In the aquarium we had 2 of the sand tigers cruising head on for us at one point. Obviously very interested, the guys who were supervising us even had to go and scare them off. Interesting sight seeing to 10ft long sandtigers swimming side by side heading straight for you. Wish i had a camera in the water with me for that, would have made an incredible shot.