Did you know that dolphins have an almost 360-degree field of vision? And they can never properly fall asleep? Facts like these are a ten-a-penny on this tour, which will see you climb into a saltwater enclosure to interact with these amazing animals. It all happens at Xel-Ha, a tropical ecotourism centre in Cancun. You'll have half an hour with the dolphins. In that time, you'll learn all about their habits, have some time to swim alongside them, and be treated to a wet dolphin kiss. Afterwards, you can opt to pay extra to make the most of the park's activities :there's everything from beachfront sunbathing to watersports on offer.