I chose Cano Island tour for the possibility of seeing dolphins and/or whales. Usually, I'm told they are in abundance this time of year (September). We only saw 2 dolphins, though the operators did make extra time to cruise the area looking for more. Basically, this tour is snorkeling, which I enjoy. We had one instructor who was very knowledgeable, but half of the time I was in the water I was trying to follow his instructions and stay close by. So for me, it wasn't relaxing like I'm used to. I wouldn't do it again, unless there were recent sitings of dolphins/whales.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.