Caution! This is a dive for the experienced, with a careful plan. I've lived in the Keys for years and have concluded that it's best to dive while towing a kayak with flag. Slack tide is of course, important. http://www.mobilegeographics.com:81/locations/317.html, Lists slack tides not often found in listings. Contrary to an earlier post, depth can reach up to 30 ft. You can enter from the parking area in Bahia Honda, or on the opposite (West) end outside the park. I use a very good propulsion vehicle but cannot rely on it to handle the currents. Again--experienced diver---with a plan, or not at all, would be my advise.