First natural ecosystem you'll visit in this adventure is the Tulum Reef Bay, which promises stunning views of the Tulum Ruins. Get up close and personal from the boat, with plenty of time to take photos. Then, get ready to immerse yourself in the beautiful Caribbean Reef and experience the marine life first hand, by snorkeling through it. Next spot is a spectacular underground cenote, a type of sinkhole, full of rock formations and of history. Its stalagmites and stalactites are sure to impress. You'll use a lifejacket during this part of the experience to ensure safety and enjoyment.