From a reader:

Jonah,
I can tell you from lots of experience diving off the Florida and
Alabama Gulf Coats that unless there is an artificial reef around,
it’s a lot like diving in a swimming pool. The bottom is mostly just
featureless white sand except for a very occasional limestone outcrop.
The artificial reef program is definitely adding habitat.
I can’t wait to go down and dive the Oriskany. Added to that
Pensacola is one of the most pleasant towns in Florida. It’s worth a
visit even if you don’t go in the water.