Underwater river scene with freshwater plants and tetra fish, Aquário Natural, Rio Baia Bonito, Mato Grosso do Sul, Brazil

© Michel Roggo/Minden Picture

Crystal clear. Freshwater plants in Aquario Natural, Brazil

Aquário Natural (Natural Aquarium) is the pristine source of the Baía Bonita River and a highlight of the Baía Bonita Ecological Reserve. This remote inland region of Brazil is a popular spot for eco-tourism. A tour of the Aquário Natural offers a hike through the jungle followed by snorkelling with more than 30 varieties of fish and gorgeous vegetation to marvel at. Other popular activities of the area include swimming the Silver River, abseiling 236ft (72m) down into the waters of the Anhumas Abyss, and walking through the treetops on the suspended steel walkway of the Circuito Arvorismo (The 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 travelled the world in search of the most beautiful freshwater environments. He has taken more than 12,000 photographs across 48 locations, highlighting the need to protect unsullied locations and to safeguard the world’s wetlands and freshwater ecosystems.