Jack Dykinga / Saguaro cactus (Carnegiea gigantea) in flower at night, with The Milky Way behind, Sonoran Desert National Monument, Sierra Estrella Mountain Wilderness, Arizona, USA, May.

Juergen Freund / Green turtle (Chelonia mydas) hatchling swimming to the sea still in the shallows of the beach. Anano Island, Wakatobi, South Sulawesi, Indonesia

Suzi Eszterhas / Blue-fronted Parrot (Amazona aestiva), Pantanal, Brazil

Pal Hermansen / Aerial view of river delta, South West Iceland, June 2014.

Michel Poinsignon / Kingfisher(Alcedo atthis) male perched on branch over river with fish in beak, Lorraine, France. May.

Wild Wonders of Europe / Bartocha / Piano Perduto, Monti Sibillini National Park, Italy, May, 2009.

David Noton / Green waters of Emerald Lake, near Carcross, Yukon Territories, Canada, September 2013.

Richard Herrmann / Yellowfin Tuna (Thunnus albacares) and Blue Marlin (Makaira nigricans) beside floating kelp, Nine Mile Bank, San Diego, California

Ross Hoddinott / Male banded demoiselle (Calopteryx splendens), resting on reed, Lower Tamar Lakes, Cornwall, UK. June.

Alex Mustard / Male Bullethead parrotfish (Chlorurus sordidus) displaying in late afternoon. Ras Katy, Sinai, Egypt. Gulf of Aqaba, Red Sea.

Bence Mate / Red and green macaws (Ara chloropterus) in flight, motion blurred photograph, Buraxo das aras, Brazil.

Michael Pitts / Green Turtle (Chelonia mydas) hatchling swimming out to deep water from Karan Island, Saudi Arabia, Arabian Gulf.