He co-presented the six-part BBC2 television series Last Chance to See, with Stephen Fry, in which the unlikely duo travelled the world in search of endangered species (following in the footsteps of a similar journey Mark made with Douglas Adams 20 years before). He is currently co-presenting The Museum of Life, a BBC2 television series exploring research and wildlife collections behind the scenes at the Natural History Museum in London, due to be broadcast in spring 2010. Mark also presented the weekly half-hour radio programme Nature,on BBC Radio 4 for many years.
He has written more than 50 books (including several bestsellers) and hundreds of newspaper and magazine articles, and has been writing a provocative monthly column in BBC Wildlife magazine since January 2004. He is also Contributing Editor of Wanderlust magazine.
Mark has been Chairman of the Judging Panel of the prestigious Wildlife Photographer of the Year Competition, jointly owned by BBC Wildlife magazine and the Natural History Museum, since 2005. His own extensive collection of wildlife and conservation photographs, taken in more than 100 countries, is sold through picture agencies around the world.
Mark has co-founded several wildlife-tour companies over the years, including Wild Oceans, Discover the World and Ocean Wanderers, although now only has time to lead occasional wildlife or wildlife-photography tours.
He worked for several international conservation organisations in the 1980s and now advises many on a consultancy basis. He spends a lot of time voluntarily raising funds and awareness for conservation and holds official positions in several different wildlife charities.