Actually, the water is not that cold, it should be at a consistant 72 degrees, which is ideal temp for most of the fish and other life forms in these tanks to thrive. The shark pictured above in fact is a bonnethead shark, smaller and less aggressive than a hammerhead. You guys don't want to be swimming with a hammerhead. They also have small nurse sharks and leopard sharks in there. I also saw when I was there a spotted eagle ray, whch many will confuse for a stingray. Stingray's will stay atr the bottom where as eagle rays have a whip like tail and swim towards the center of the enclosure.