After a 45 minutes trip in which you will be able to find dolphins, turtles or stingrays you will arrive to Cabo Catoche, where the Gulf of Mexico and the Caribbean meet.
The crystal and shallow waters will let you snorkel in the small but lovely reef and watch snappers, barracudas and many different kinds of fishes and corals.

After the refreshing dive time you will be taken to the shore and you will have time to wander around, gather some shells or just relax on the white virgin beaches.
Then, on the way back to Holbox, if the tide is high the returning trip will be made through the mangrove and the inner side of the island.