Scuba diving and snorkelling is still Cozumel’s primary draw, mainly due to the healthy coral reef and fantastic marine life.These coral reefs are protected from the open ocean by the island’s natural geography. In 1996, the government of Mexico also established the Cozumel Reefs National Marine Park, forbidding anyone from touching or removing any marine life within the park boundaries. Ironically in the mid 90’s a deep-water pier was built for Cruise ships to dock causing damage to the reefs but increasing the tourist numbers with daily cruise stops.