In Key Largo there are many tour operators offered a boat tour and snorkelling trip out to the Pennekamp Coral Reef. I decided to go on the Sundiver III, the boat was lovely, easy to find, the staff were friendly and gave a great rolling explanation of the local area as we passed. The boat ride out to the reef was lovely, you could sit on the top deck and feel the wind in your face and observe the panaromic views looking back at the Keys. Unfortunately, this was the best part. Although you are provided with a wetsuit, snorkels and fins to use, the Coral reef was thoroughly dissapointing, most of it dead or dying. I suppose this is the hazard of running so many tours in a particular area. If you want a nice boat ride, go for it, but if you are wanting to see Coral reef - don't waste your time.