Doug Gimesy / Little blue penguin (Eudyptula minor), two standing on rocks at night, silhouetted against Melbourne city lights. St Kilda breakwater, Victoria, Australia. December 2016. COP26 Countdown Photo Competi...

Ingo Arndt / Mountain Lion (Puma concolor) hunting Guanaco (Lama guanicoe) male, Torres del Paine National Park, Patagonia, Chile, sequence 3 of 12. Joint winner of the Mammal Behaviour Category of the Wildlife Ph...

Juergen Freund / Hand-reared Boongary (Dendrolagus lumholtzi) descending from a tree and climbing onto its carer's back, Atherton Tablelands, Queensland, Australia.

Erlend Haarberg / Mountain hares (Lepus timidus) fighting in snow at night, Vauldalen, Norway. Joint overall winner of the GDT European Wildlife Photographer of the Year 2017. Highly commended in the Wildlife Photo...

Juergen Freund / Tolga Bat Hospital volunteer with Little red flying fox (Pteropus scapulatus) crawling over shoulder. Tolga Bat Hospital, Atherton Tablelands, Queensland, Australia. August 2014. Second Place in the M...

Ole Jorgen Liodden / Arctic tern (Sterna paradisaea) in flight, Svalbard, Norway, July. Highly commended, BIRDS category, GDT 2011 competition. Joint runner up in Creative Visions of Nature Category, Wildlife Photographer...

Graham Eaton / Bedding planes and joint network in Jurassic age Blue Lias limestone and shale exposed at low tide at Nash Point, South Glamorgan Heritage Coast, Wales, September 2017.

Graham Eaton / Bedding planes and joint network in Jurassic age Blue Lias limestone and shale exposed at low tide at Nash Point, South Glamorgan Heritage Coast, Wales, September 2017.

Graham Eaton / Hawthorn (Crataegus monogyna) tree growing out of joints in carboniferous limestone, Ingleton, Yorkshire, January 2017. The tree has exploited a water enlarged joint or gryke in the limestone pavement...

David Perpinan / Radiography of a wild herring gull (Larus argentatus) showing osteomyelitis affecting the left tarsal joint. Small repro only

Oliver Hellowell / Oliver with Ken Jenkins at their joint exhibition, T5 Gallery Heathrow Airport, July 2018

Oliver Hellowell / Photographers Oliver Hellowell and Ken Jenkins (Tennessee based photographer) being filmed at their joint exhibition at the T5 Gallery, Heathrow Airport, England, UK. July.