We booked a tour with Ocean Tours. One of the best trips we've done. The tour guides (Katie, Julio & driver, Martin) were amazing and v informative. The snorkelling experience was great and then we visited an eco park with 3 cenotes and swam in 2. The first with lots of fish and turtles and the second with lotsw of catfish (amongst others) and caves. It was an outstanding trip and I would highly recommend it. You can also purchase a CD with Julio's pictures from the day for $25 USD which is very cheap compared with other trips.
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