Mark on Baffin Island, Nunavut

Mark on Baffin Island, Nunavut

Mark on Baffin Island, Nunavut

Mark on Baffin Island, Nunavut

BBC series Last Chance to See Mark and Stephen Fry with Sirocco the kakapo, Codfish Island, New Zealand

Sirocco the kakapo tries to mate with Mark's head, Codfish Island, New Zealand (BBC's Last Chance to See)

BBC series Last Chance to See, Mark co-presenting with Stephen Fry (Amazon)

Mark on anti-poaching patrol for tigers in Siberia

Mark on anti-poaching patrol for tigers in Siberia

Mark in Sea of Cortez, Mexico

With Douglas Adams, on location for the original Last Chance to See

With Douglas Adams, on location for the original Last Chance to See

Rio Negro, Amazon Basin, Brazil

BBC series Last Chance to See, Mark co-presenting with Stephen Fry (Sipadan)

Mark in Sea of Cortez, Mexico

Mark photographing manatee, Crystal River, Florida

With southern white rhino, Ol Pejeta Conservancy, Kenya

Mark on anti-poaching patrol, Cambodia