Snorkeling: Yes, there are many costly tours for snorkeling in and around Cancun. But major expenses are not really necessary. And snorkeling in Cancun's crystal clear waters will be an experience one will never forget. The different coral and fish put you in another world. REMEMBER: All beaches in Mexico are public. This is federal law. So you can snorkel where you want. I recommend the following places:Punta Cancun at the Camino Real Hotel; here I have often seen sea turtles as well as squid (...