Popular activities in Cancun include swimming with dolphins or whale sharks, visiting ecological parks, touring cenotes and exploring Mayan ruins. Chichen Itza, listed as a World Heritage site and one of the New Seven Wonders of the World, is roughly 117 miles west of Cancun and a popular day trip.
Cancun offers dolphinariums where adults and children alike may interact with dolphins in a safe environment. Swimming with whale sharks is another popular activity, but this is done in the open ocean. Tours take visitors to the shark's feeding grounds off the nearby islands of Holbox and Conroy between May and September. Though biologically classified as sharks, these giant creatures feed on plankton and are harmless to humans.
Cancun's ecological theme parks include Xplor, near Xcaret. The park offers the chance to explore underground caves and other geological structures created when a giant asteroid hit the Earth millions of years ago. Xcaret Park leads visitors through a Caribbean jungle and offers an aquarium with another opportunity to swim with dolphins. Xel-Ha is a natural aquarium, offering snorkeling amidst tropical fish.
Cenotes are underground springs that the Maya used as their water source. The Xenotes Oasis Maya tour takes visitors to various cenotes, each with a different activity. Visitors can also go swimming, snorkeling, kayaking or zip-lining.