Freshwater plants and tetra fish, Aquário Natural, Rio Baía Bonita, Mato Grosso do Sul, Brazil

So fresh, so clean. Freshwater plants in Aquário Natural, Brazil

Aquário Natural (Natural Aquarium, naturally) is the pristine, crystal-clear source of the Baía Bonita River and a highlight of the Baía Bonita Ecological Reserve. This remote inland region near the town of Bonito, Brazil, is a popular spot for ecotourism. A tour of the Aquário Natural offers a hike through the jungle followed by snorkeling with over 30 varieties of fish and gorgeous vegetation to marvel at. Other popular activities of the area include swimming in the Rio da Prata (Silver River), rappelling 236 feet down into the waters of the Anhumas Abyss, and walking through the treetops on the suspended steel walkway of the Circuito Arvorismo (Trees Circuit).

The underwater scene in today's image of plants and tetra fish was photographed by Swiss artist Michel Roggo. Since 2010, Roggo has crisscrossed the world in search of the most beautiful freshwater environments. His work has taken him to 48 locations where he has taken more than 12,000 photographs. His projects highlight the need to protect unsullied locations and to safeguard the world's wetlands and freshwater ecosystems.