Go here, slef guide ( or just any of the road side water way )

https://www.google.com/maps/place/25%C2%B053'40.3%22N+81%C2%B015'43.7%22W/@25.894532,-81.2643177,668m/data=!3m2!1e3!4b1!4m2!3m1!1s0x0:0x0?hl=en

A little down to the west, there is a visitor center can take you out for boat ride.