Some of the clearest water in the Atlantic, 40m visibility over volcanic pinnacles, with spinner dolphins that pour out of Baía…Some of the clearest water in the Atlantic, 40m visibility over volcanic pinnacles, with spinner dolphins that pour out of Baía dos Golfinhos every dawn in the hundreds, lemon and nurse sharks, huge turtles, and Baía do Sancho, repeatedly voted the best beach in the world, reached down a crevice ladder. Discovered in 1503 and used variously as a prison, a WWII airbase and, briefly, a Brazilian missile-tracking station. Declared a national marine park in 1988 and a UNESCO World Heritage site in 2001. Amerigo Vespucci may have made the first recorded landing. Anchorage: Only one usable anchorage, on the north-west side. A strict national marine park, daily visitor tax, capped numbers, and many beaches closed to boats. Hazards: A strict national marine park, daily visitor tax, capped numbers, and many beaches closed to boats. Plus