O.K., I did some research last night and the hard coral in Hetland's photos is called northern star coral, scientific name
Astrangia poculata. It is the only hard coral found inshore in the northern Gulf of Mexico. Although you usually think of hard corals as occurring in the tropics, this one is actually temperate in its distribution and can be found growing on hard substrates up the east coast to Cape Cod.
Rick, your theory about the hurricanes scrubbing everything clean and removing this coral is probably correct. I know that Hurricane Wilma sandblasted everything in Cozumel down to about 30 feet. I haven't bothered to go back to Cozumel because of this.
You guys might be interested in some photos I took last month on a vacation to Baja California, Mexico:
Baja California Mexico underwater 2009 Photo Gallery by Dave_Clausen at pbase.com
I'm still somewhat basking in the post-vacation glow. That's the thing about underwater photography; it takes so long to go through, cull, and process your photos after you get back that the vacation seems to extend forever.
By the way, the reason I am always interested in you guys and your posts is that I own a vacation condo near the Destin jetties and I have spent many an enjoyable hour snorkeling there. I actually live in Alaska, but my sister's family lives in Tallahassee so I am always going to FL. I had a seizure one time so I am not supposed to scuba dive - anyway, I like the freedom and unlimited time in the water that snorkeling gives you. Surprisingly, I've never been to the St. Andrews jetties, but I am planning to head over there for a day when I go to Destin next month.