Bence Mate / Green / Double-crested basilisk (Basiliscus plumifrons) running across water surface, Santa Rita, Costa Rica

Ross Hoddinott / 2020VISION / Emerald damselfly (Lestes sponsa) in early morning light, Arne RSPB reserve, Dorset, England, UK, September

Ross Hoddinott / 2020VISION / Emerald damselfly {Lestes sponsa}, silhouette against water, Arne (RSPB) Nature Reserve, Dorset, UK. September. Did you know? RSPB Arne is a diverse habitat for insects, birds, plants and mammals, and...

Pete Oxford / Portrait of an Emerald Glass Frog (Espadarana / Centrolenella prosoblepon). Captive. Choc Region of northwest Ecuador.

Juergen Freund / Outrigger boat in Big Lagoon, with its karst limestone cliffs, emerald waters and shallow coral reefs in the white sand. North Palawan, Philippines, May 2009.

Rod Williams / Green / Emerald Tree Monitor (Varanus prasinus) head portrait climbing tree trunk. Captive, from Papua New Guinea, Indonesia

David Noton / Emerald Lake at dawn with the peaks of the President Range beyond, Yoho National Park, British Columbia, Canada. September 2009

David Noton / Emerald Lake with the peaks of the President Range beyond, Yoho National Park, British Columbia, Canada. September 2009

Aflo / Y-12304 Huge full moon above Emerald Bay at sunset, Lake Tahoe, California USA

Wild Wonders of Europe / della Ferrera / Imature male Emerald damselfly (Lestes sponsa) on leaf covered in water droplets, Nuglasica area, Northern Livanjsko Polje (karst plateau) Bosnia and Herzegovina, May 2009 WWE INDOOR EXHIBITION

Wild Wonders of Europe / Maitland / Metallic green chafer / Emerald fruit beetle (Protaetia / Cetonia cuprea) Close-up of head, Stenje region, Galicica National Park, Macedonia, June 2009

Eric Baccega / Two people canoeing on Emerald Lake, Yoho National Park, Rocky Mountains, British Columbia, Canada, September 2009