Went and dove Devil’s Den and Blue Grotto near Crystal River florida (with Crystal River Watersports). I would definitely recommend our dive instructor John, he was one of my best ever. Highly recommend the dive as well — was a great getaway from Orlando, driving across to Crystal River near the Gulf Coast.
The dive’s are pretty safe by my estimate — a little more tricky than diving in open water, but these are different environments than caves where you’re super restricted. And an experienced instructor will be a big help, as always.