Tunnels was my very first scuba experience and it was fabulous! We saw several large turtles, sharks and myriad fish. One of the tubes/tunnels that we went through opened up into an underwater partially enclosed cavern with the light streaming through the top. It was filled with a school of fish swimming in a circle in the light. I felt like I was one of the fish swimming in a huge aquarium. Now I'm hooked on scuba, got my PADI certification and can't wait to come back!