Great dives at both Columbia & Shallows. We visited both sites twice during our stay. Viz was great 1st day. After a couple days of rain and wind, it was still decent on the 2nd visit. Saw nurse sharks, turtles, southern rays,garden eels, wonderful swim thrus, spotted eels, and a group of 6 black tipped shark besides everything else. We dove with BLue Angel (Tony & Jose); it was great both times.