The most memorable way to get to Deer Island—one of three islands that form a channel off the Zona Dorada—is on an amphibious tank. The World War II relic departs regularly from El Cid hotel, in the Zona Dorada. It's a 20-minute ride. You can also get here on snorkeling and day cruises arranged through area tour operators. The beach is lovely and clean. For even better snorkeling, hike to small, secluded coves covered with shells.