Solvin Zankl / Woodlouse expert Christian Schmidt with a Woodlouse (Porcellio scaber) held in a pair of tweezers. Germany, June 2009

Suzi Eszterhas / Polar Bear {Ursus maritimus} anaesthetised 3/4-months cub held by biologist Nick Lunn during examination, Wapusk NP, Manitoba, Canada

Doug Gimesy / Koala (Phascolarctos cinereus) in a Eucalyptus tree after recent bushfires, just before having a visual inspection for its health. If it is determined that a closer examination is required to determin...

Doug Gimesy / Koala (Phascolarctos cinereus) in a Eucalyptus tree after recent bushfires, just before having a visual inspection. If it is determined that a closer examination is required to determine its health, i...

Sergio Hanquet / Scientists performing Sperm whale (Physeter macrocephalus) calf necropsy on beach to determine cause of death, whale found drifting at sea. Tenerife, Canary Islands. 2010.

Sergio Hanquet / Sperm whale (Physeter macrocephalus) in net, hoisted in air prior to necropsy, man watching in foreground. Tenerife, Canary Islands, 2010.

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) hoisted in air, prior to necropsy to determine reason for death. Tenerife, Canary Islands. 2015.

Sergio Hanquet / Blainville's beaked whale (Mesoplodon densirostris) washed up dead on beach, man standing in water looking at whale, prior to necropsy to determine reason for death. Tenerife, Canary Islands. 2015...

Sergio Hanquet / Woman annotating illustrations of Sperm whale (Physeter macrocephalus) during necropsy of dead calf found drifting at sea. Tenerife, Canary Islands. 2010.

David Perpinan / Dental examination of a male Brown bear (Ursus arctos) anaesthetised in Slovenia for a reintroduction project in the Pyrenees, Jelen Reserve, Slovenia, June, 2016.

Constantinos Petrinos / Decorator crab (unidentified) on Soft Coral at night. Due to the heavy decoration, the diagnostic features of many species are hidden from view and only a laboratory examination of a specimen can prov...

Constantinos Petrinos / Decorator crab (unidentified) on Soft Coral at night. Due to the heavy decoration, the diagnostic features of many species are hidden from view and only a laboratory examination of a specimen can prov...