Nick Garbutt / Green-and-Black Poison Dart Frog (Dendrobates auratus) inside bromiliad where it breeds. Boca Tapada, Caribbean slope, Costa Rica, Central America.

Sue Flood / Chestnut mandibled toucan (Ramphastos ambiguus swainsonii) near Boca Tapada, Costa Rica. January 2011

Martin van Lokven / Red-eyed Tree Frog (Agalychnis callidryas), Laguna del Lagarto, Boca Tapada, Costa Rica

Claudio Contreras / Prehistoric rock art with depiction of Pronghorn antelope. Boca de San Julio cave, San Francisco Sierra, El Vizcaino Biosphere Reserve, Baja California Peninsula, Mexico.

Seth Patterson / Blacktip shark (Carcharhinus limbatus) juvenile caught on illegal long-line fishing line washed ashore on Boca China beach, Texas, USA, May.

Seth Patterson / Blacktip shark (Carcharhinus limbatus) juvenile caught on illegal long-line fishing line washed ashore on Boca China beach, Texas, USA, May.

Michel Roggo / Aerial shot of the Laguna Sian Ka'an, freshwater lagoon, at edge of the sea, close to Boca Paila, Quintana Roo, Yucatan Peninsula, Mexico . Photographed for The Freshwater Project February 2014

Michel Roggo / Aerial shot of the Laguna Sian Ka'an, freshwater lagoon, at edge of the sea, close to Boca Paila, Quintana Roo, Yucatan Peninsula, Mexico . Photographed for The Freshwater Project February 2014

Michel Roggo / Aerial shot of the Laguna Sian Ka'an, freshwater lagoon, close to Boca Paila, Quintana Roo, Yucatan Peninsula, Mexico. February 2014. Photographed for The Freshwater Project

Michel Roggo / Aerial shot of the Laguna Sian Ka'an, freshwater lagoon, just before entering the sea, close to Boca Paila, Quintana Roo, Yucatan Peninsula, Mexico. February 2014. Photographed for The Freshwater Proj...

Nick Garbutt / Adult King Vulture (Sarcoramphus papa) feeding at a carcass. Laguna del Lagarto, Boca Tapada, Caribbean slope, Costa Rica, Central America.

Nick Garbutt / Adult King Vulture (Sarcoramphus papa) in flight. Laguna del Lagarto, Boca Tapada, Caribbean slope, Costa Rica, Central America.