Absolutely amazing! The springs were lovely to drift down, and we got to swim alongside a manatee mama and her kid, who spent our visit rolling around in the grass under the water. We saw a lot of fish and crabs, and had the opportunity to dive down to the bottom of the spring. I chose not to, a big crab was giving me "I dare you" eyes. Well worth it, a fantastic experience with a very friendly and helpful crew and captain!