Go, Turtles, Go! (Bahia): From mid-February to April you have a good chance to watch turtle hatchings at Praia do Forte Tamar's turtle project. See how these tiny sea turtles crawl out of the egg, and cheer them on as they waddle to the ocean for their first swim.
Sea Horses in Porto de Galinhas: The roots of the mangroves in Porto de Galinhas are home to one of the most magical sea creatures, the sea horse. Guides dive in the water to look for these delicate animals and are usually successful in scooping one up (literally, in a glass jar). Once you have had a chance to learn a little bit more about the animal it goes back into its natural habitat.
Caiman Spotting (the Amazon): Spotting caiman (alligators native to South America) involves setting out in a canoe after the sun has set. Boating through the dark Amazon forest is quite an experience, but nothing quite prepares you for the sight of those caiman eyes that light up in the beam of the spotlight.
Butterflies in Iguaçu: Everyone talks about the falls; few mention the butterflies. The lush rainforest provides the perfect environment for many colorful species, and everywhere you go lovely butterflies are aflutter. Hard to miss is the metallic-blue Morpho butterfly; it's about the size of your hand.
Bird Spotting in the Pantanal: Even if you're not a birder, the Pantanal has hundreds of species to spot, some as big as your little brother, others as colorful as Carnaval. Plus hungry caiman and giant river otters, and sometimes even jaguar, all of it best viewed from horseback.
Red Araras: The sunset over the red-rock formations in the Chapada dos Guimarães, north of Cuiabá, is a magical experience in itself. Even more special is the view of scarlet macaws working the thermals off the sheer cliffs in the warm glow of the setting sun.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.