I recently went to Williston Florida with 3 friends of mine on a dive trip. We dove the Blue Grotto and the Devil`s Den. They were both fun dives and easy. We dove the Blue Grotto was the deeper of the 2 dives at 90 feet in the morning. The visibility was extremely clear. The facility was set up nice and was quite convenient. After lunch we dove the Devil’s Den. It too was very well set up and the people there were polite and helpful. The Devil’s Den was probably my favorite of the two. Crystal clear water and beautiful underground formations. (see My Photos) I recommend both of these sites for a different and fun dive. I will probably go again some time.