Carol Walker / Lusitano horse, bull fighter mounted on grey stallion, in this type of bull fighting neither horse nor bull are injured, Portugal, May 2011, model released

Doug Perrine / Diver sitting in wreck of WWII Japanese fighter plane, Palau, Micronesia

Carol Walker / Lusitano horse, bull fighter mounted on grey stallion, in this type of bull fighting neither horse nor bull are injured, Portugal, May 2011, model released

Carol Walker / Lusitano horse, bull fighter mounted on grey stallion, performing dressage steps, Portugal, May 2011, model released

Carol Walker / Lusitano horse, mounted bull fighter in arena with bull, in this type of bullfight neither bull nor horse are injured, Portugal, May 2011, model released

Carol Walker / Lusitano horse, mounted bull fighter in arena with bull, in this type of bullfight neither bull nor horse are injured, Portugal, May 2011, model released

Steven Fuller / Bison beside fire fighter spraying wood cabin with fire retardant foam to protect it from forest fire, Yellowstone NP, Wyoming, USA. 1988

Chris Gomersall / Jet fighter plane above Valley Lakes RSPB reserve, Anglesey, Gwynedd, Wales, UK

Dave Bevan / Siamese fighting fish {Betta splendens} female captive

Juergen Freund / Diver at wreck of WW II Japanese fighter plane 'Nakajima Kate' + anemone with clownfish, Kavieng, Papua New Guinea

Juergen Freund / Diver at the wreck of a WW II Japanese fighter plane 'Nakajima Kate', Kavieng, Papua New Guinea

Juergen Freund / Wreck of Japanese WW II zero fighter aeroplane, diver + Clownfish, Papua New Guinea

Juergen Freund / Diver at the wreck of a WW II Japanese fighter plane 'Nakajima Kate', Kavieng, Papua New Guinea

Juergen Freund / Wreck of Japanese WW II Mitsubishi F1 fighter aeroplane (also called Petes biplane) Rabaul, Papua New Guinea

Juergen Freund / Wreck of Japanese WW II Mitsubishi F1 fighter aeroplane (also called Petes biplane) Rabaul, Papua New Guinea