Rio da Prata Snorkeling in Jardim, near Bonito

At Recanto Ecológico Rio da Prata, in Jardim, 50 km from Bonito, you snorkel 2,000 m down the Rio Olho d'Água, with water kept crystal clear by limestone, spotting dourados, pintados, and piraputangas. First, walk a 300 m forest trail; in the water, the gentle current picks up at underwater springs known as "volcanoes." The final 600 m can be covered on the solar-powered boat Chalana do Prata II. The tour lasts about 4 hours, with wetsuit, mask, snorkel, guide, and traditional lunch included. Minimum age of 5 years and maximum weight of 120 kg; pregnant women past 24 weeks may not participate.