Alex Mustard / Reef lizardifsh (Synodus variegatus) at a cleaning station, being cleaned by Holthuis anemone shrimps (Ancylomenes holthuisi). Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Jiri Lochman / Ningbing pseudantechinus (Pseudantechinus ningbing) Mornington Station, in the Kimberley, Western Australia.

Juergen Freund / Scientist Susan Laurance leads the Daintree Drought Experiment in far north Queensland. The experiment combines the efforts of plant physiologists, ecologists, soil experts, climatologists and hydrolo...

Stefan Christmann / Milky way and moonbow halo during polar night. Above Neumayer-Station III, Alfred-Wegener-Institut research station, Atka Bay, Antarctica. June 2017.

Stefan Christmann / Sunset with beams of light shining through Neumayer-Station III, Alfred-Wegener-Institut research station. Atka Bay, Antarctica. January 2017.

Stefan Christmann / Stars and milky way over Neumayer-Station III, Alfred-Wegener-Institut research station. During full moon. Atka Bay, Antarctica. April 2017.

Phil Savoie / White tent making bat (Ectophylla alba) roosting in Heleconia leaf, La Selva Field Station, Costa Rica.

Emanuele Biggi / Peruvian Tarantula (Pamphobeteus sp.) and Humming Frog (Chiasmocleis royi) together, Los Amigos Biological Station, Madre de Dios, Amazonia, Peru. These species have a commensal relationship. The tara...

Emanuele Biggi / Peruvian Tarantula (Pamphobeteus sp.) adult, walking over Humming Frog (Chiasmocleis royi) without preying on it. Los Amigos Biological Station, Madre de Dios, Amazonia, Peru. These species have a com...

Piotr Naskrecki / Chestnut Short-tailed Bat (Carollia castanea) flying, La Selva Biological Reserve, Costa Rica

Piotr Naskrecki / Silky Short-tailed Bat (Carollia brevicauda) flying, La Selva Biological Reserve, Costa Rica

Ashley Cooper / Sunflower next to the PS20 solar thermal tower, the only such working solar tower currently in the world. Sanlucar La Mayor, Andalucia, Spain. May 2011