Lucas Bustamante / Scarlet macaw (Ara macao), Orange-cheeked parrots (Pyrilia barrabandi) and Cobalt-winged parakeets (Brotogeris cyanoptera) drinking water at an Upper Amazon clay lick, Yasuni National Park, Orellana,...

Lucas Bustamante / Blue-footed booby (Sula nebouxii) resting with its head among its feathers, portrait, San Cristobal Island, Galapagos Islands.

Lucas Bustamante / Blue-footed booby (Sula nebouxii) sitting on its guano nest, North Seymour Island, Galapagos Islands.

Lucas Bustamante / Sally Lightfoot crab (Grapsus grapsus) on black volcanic rock along the shore, Santiago Island, Galapagos Islands.

Lucas Bustamante / Galapagos sea lion (Zalophus wollebaeki) resting on rocks, Santiago Island, Galapagos Islands. Endangered.

Lorraine Bennery / Golden-crowned sifaka (Propithecus tattersalli) leaping through forest canopy, near Daraina, Madagascar. Critically endangered.

Inaki Relanzon / Ring-tailed lemur (Lemur catta) female carrying infant on her back, portrait, Anja reserve, Madagascar. Endangered.

Guy Edwardes / Violet sabrewing hummingbird (Campylopterus hemileucurus) in flight, hovering, mid-elevation cloud forest, Costa Rica.

Franco Banfi / Sperm whale (Physeter macrocephalus) socializing and opening its mouth. Dominica, Caribbean Sea.

Franco Banfi / Sperm whale (Physeter macrocephalus) opening its mouth, Dominica, Caribbean Sea.

Franco Banfi / Sperm whale (Physeter macrocephalus) sleeping upright with a Squid's arm hanging out of its mouth, Dominica, Caribbean Sea.

Franco Banfi / Sperm whale (Physeter macrocephalus) female with calf, diving, Dominica, Caribbean Sea.