Tui De Roy / South American Gray Fox (Lycalopex griseus), Valdes Peninsula, Patagonia, Argentina

Tui De Roy / Perito Moreno Glacier being cut back by water pressure from trapped Lake Argentina, Los Glaciares National Park, Patagonia, Argentina

Tui De Roy / Perito Moreno Glacier being cut back by water pressure from trapped Lake Argentina, Los Glaciares National Park, Patagonia, Argentina

Tui De Roy / Perito Moreno Glacier being cut back by water pressure from trapped Lake Argentina, Los Glaciares National Park, Patagonia, Argentina

Tui De Roy / Perito Moreno Glacier actively advancing into Lake Argentina, Los Glaciares National Park, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) mother and calf tails, underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) mother and calf, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) tail, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) tail lob, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) swimming underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) spyhopping, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) swimming underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) surfacing, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) and diver, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) researcher Jim Darling pets friendly individual, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) tail, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) tails underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) under research boat, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) under research boat, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) calf and mother, underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) breaching, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) and diver, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) pair mating at surface, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) flipper, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) spouting, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) breaching, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) showing baleen while feeding, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) calf accidentally hit with mother's tail during mating, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) tail, in rough seas, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) tail at sunset, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) fluke, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) mother and calf, underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) near surface, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) juvenile, underwater, Peninsula Valdez, Argentina

Flip Nicklin / Southern Right Whale (Eubalaena australis) juvenile, underwater, Peninsula Valdez, Argentina

Tui De Roy / Cape Horn National Park honors a notorious landmark at the southern tip of South America, Patagonia, Argentina

Tui De Roy / Cape Horn National Park honors a notorious landmark at the southern tip of South America, Patagonia, Argentina

Tui De Roy / Glacier spilling down from Cerro Torre, Los Glaciares National Park, Argentina

Miles Barton / Iguazu Falls and rainbow. Argentina/Brazil border, South America

Roberto Rinaldi / The expedition leader communicating with divers while they are immersed in a crevasse, using underwater communication equipment, Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentin...

Roberto Rinaldi / A diver immersed in a flooded cave in Perito Moreno glacier, securing a rope that will enable him to find his way back, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / Two divers starting their dive inside a crevasse of the Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / A river flowing on the surface of Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / A diver ready to dive inside a crevasse full of water on the surface of Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / View across the top of the Perito Moreno glacier with Andean mountains in the backgound, Los Glaciares National Park, Argentina, Patagonia

Roberto Rinaldi / Walking in a dangerous crevasse area on Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / Diver swimming in flooded glacial crevasse, Perito Moreno glacier, Patagonia, Argentina.

Roberto Rinaldi / Yachts in the harbour, Ushuaia, the point of departure for cruise ships and yachts leaving for the Antarctic Peninsula, Argentina.

Roberto Rinaldi / A diver in a crevasse inside the Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / Two divers Matteo Diana (left) and Roberto Rinaldi (right) ready for a dive in the water of Largo Argentino in front of Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / Person climbing inside a cave carved by a river flowing inside the Perito Moreno glacier during summer, Patagonia, Argentina.

Roberto Rinaldi / Climbers preparing to explore a crevasse inside the Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / A front view of the Perito Moreno glacier and the Lago Argentino, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / An alpinist watching a river flowing on the surface of Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / The Perito Moreno glacier ends in Lago Argentino, Argentina, Patagonia, South America

Roberto Rinaldi / An equipped diver descending into a flooded crevasse in the Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / An underwater photographer ready to start his dive in a crevasse on Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / Parque National Los Glaciares, the Argentinian National Park that includes the Perito Moreno Glacier, Argentina, Patagonia

Roberto Rinaldi / Two explorers evaluating the possibility of diving in a flooded crevasse, Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / A person standing at the end of a tunnel in a glaciar formed by an ice melt glacial river, Perito Moreno glacier, Los Glaciares National Park, Patagonia, Argentina

Roberto Rinaldi / Speleologist ice climbing down deep cave in the Perito Moreno glacier, Patagonia, Argentina

Roberto Rinaldi / A person standing at the end of a tunnel formed by an ice melt glacial river, Perito Moreno glacier, Patagonia, Argentina

Colin Monteath / Cerro Torre and Fitzroy taken from Loma Del Pueque Umbado, Los Glaciares National Park, Patagonia, Argentina

Tui De Roy / Glacier and alluvial fan, Nahuel Huapi National Park, Tronador, Patagonia, Argentina

Flip de Nooyer / Blue-eyed Cormorant (Phalacrocorax atriceps) colony on Bird Island, Faro Les Eclaireurs lighthouse in the background, Beagle Channel off of Tierra del Fuego, Argentina

Flip de Nooyer / Cape Horn National Park honors a notorious landmark at the southern tip of South America, Patagonia, Argentina

Colin Monteath / Mt Fitzroy reflected in lake at dawn, Los Glaciares National Park, Patagonian Andes, Argentina

Konrad Wothe / Guanaco (Lama guanicoe) pair grazing on grass with mountain range in background, Patagonia, Argentina

Tui De Roy / Sunrise glow on high granite spires, Fitzroy Massif, Los Glaciares National Park, Argentina

Tui De Roy / Perito Moreno Glacier ploughing into beech forest, damming Lake Argentina, Los Glaciares National Park, Patagonia, Argentina

Flip Nicklin / Gull (Larus sp) picking sunburned skin from back of Southern Right Whale (Eubalaena australis), Peninsula Valdez, Argentina

Tui De Roy / Morning sun on granite spires, Cerro Torre, Los Glaciares National Park, Argentina