The ancient Maya called it ‘Where the Sky Begins' – and there's definitely a touch of heaven to Sian Ka'an. Its mangroves, coral reefs, wildlife and archaeological sites mean that it's both a UNESCO World Heritage Site and a Biosphere Reserve, placing in the champions' league of natural parks.
Kick off with a speedboat jaunt along the coast as you make your way to the fishing village of Punta Allen. After winding your way through the mangroves, it's time to zip out to the open sea with some local fishermen. Among the wildlife you'll might spot are sea turtles, dolphin and an array of birds.
You'll then be able to relax in the clearest of Caribbean waters – utter bliss. With coral reef snorkel stops throughout the day you'll feel like you've had a real taste of forbidden fruit.