Chris Gomersall / 2020VISION / Atlantic mackerel (Scomber scombrus) in fish separator on board Shetland pelagic trawler 'Charisma', with crew member David Anderson taking a sample for measurement. Shetland Isles, Scotland, UK, Octo...

Roland Seitre / Hoffman's Two Toed Sloth (Choloepus hoffmanni) being weighed and recorded. Aviarios del Caribe Sloth Refuge, Costa Rica, 2008.

Juergen Freund / Split level of solar powered gauge measuring sea temperature, West New Britain, Papua New Guinea, May 2010

Mark Carwardine / Black rhinoceros (Diceros bicornis) - darted and being prepared for translocation by rangers from the Kenya Wildlife Service, being measured Nairobi National Park, Kenya, Endangered / threatened spec...

Ashley Cooper / Scientist taking measurements as part of a study to measure the speed of the Russelll Glacier near Kangerlussuag Greenland, July 2008

Ashley Cooper / Scientist taking measurements as part of a study to measure the speed of the Russelll Glacier near Kangerlussuag Greenland, July 2008

Ashley Cooper / Scientist using dye tracing techniques as part of a study to measure the speed of the Russell Glacier near Kangerlussuag Greenland. July 2008

Ashley Cooper / Scientist taking measurements as part of a study to measure the speed of the Russell Glacier near Kangerlussuag, Greenland. July 2008

Ashley Cooper / Scientist using dye tracing techniques as part of a study to measure the speed of the Russell Glacier, near Kangerlussuag, Greenland. July 2008

Ashley Cooper / Scientist taking measurements as part of a study to measure the speed of the Russell Glacier near Kangerlussuag, Greenland. July 2008

Ashley Cooper / Scientist using dye tracing techniques as part of a study to measure the speed of the Russell Glacier, near Kangerlussuag, Greenland. July 2008

Ashley Cooper / Scientist using dye tracing techniques as part of a study to measure the speed of the Russell Glacier, near Kangerlussuag Greenland. July 2008