I don't SCUBA, so I don't qualify. Of note though, that is the beginning of the half mile spring run to the river and the water exiting the spring is a constant 72F year round. In the next 2-3 months as temperatures drop cooling the river, hundreds of manatee will seek refuge in the warmer waters of the spring run, sometimes coming up as far as the spring itself. They cut off general swimming/snorkeling and kayaking/canoeing in the spring run when manatee are present. Harassing manatee is prohibited year round, and if present, have to allow them to come to you for any interaction.