Doug Gimesy / Researchers reviewing the data from a river water sample to determine whether any traces of platypus (Ornithorhynchus anatinus) DNA exist. Just a small trace means there are definitely platypus upstr...

Nick Upton / Researcher reviewing trailcam footage on laptop of Siberian flying squirrel (Pteromys volans) emerging from nest hole in Aspen (Populus tremula) tree at night. Mature mixed forest, near Lisaku, Estoni...

Nick Upton / Geoff Way of the Environment Agency counting European eel (Anguilla anguilla) elvers using an eel pass beside a weir on a drainage channel on the Somerset Levels by reviewing remote infra red video fo...

Nick Upton / Geoff Way of the Environment Agency counting European eel (Anguilla anguilla) elvers using an eel pass beside a weir on a drainage channel on the Somerset Levels by reviewing remote infra red video fo...

Tim Laman / Edwin Scholes reviewing videos on his laptop at base camp in the lowland rainforest near Oransbari, West Papua, New Guinea. August 2009.

Sebastian Kennerknecht / Mountain Lion (Puma concolor) biologists, Max Allen and Chris Fust, looking at satellite tracking data before looking for den, Santa Cruz Puma Project, Santa Cruz, Monterey Bay, California

Flip Nicklin / Researcher Jonathan Stern, Ph.D., of Golden Gate Cetacean Research reviewing Harbor Porpoise (Phocoena phocoena) id images, California

Sebastian Kennerknecht / African Golden Cat (Profelis aurata) biologist Laila Bahaa-el-din looking at camera trap image of African Golden Cat, Lope National Park, Gabon

David Tipling / BirdLife Malta Springwatch Camp volunteers reviewing video footage of illegal hunting in BirdLife operations room during BirdLife Malta Springwatch Camp April 2013

David Tipling / Nick Barbara and ALE Police officer reviewing video footage of illegal Turtle Dove trapping during BirdLife Malta Springwatch Camp April 2013

Igor Shpilenok / Photographer Patricio Robles Gil reviewing his work with a West Caucasian tur (Capra caucasica) behind him. Kabardino-Balkarsky Nature Reserve, Caucasus Region of Russia.

Igor Shpilenok / Photographer Patricio Robles Gil reviewing his work with a West Caucasian tur (Capra caucasica) behind him looking on. Kabardino-Balkarsky Nature Reserve, Caucasus Region of Russia.