Mark is an award-winning writer, magazine columnist, widely published photographer, consultant, broadcaster and lecturer. With Stephen Fry he co-presented Last Chance to See, a BBC TV series about endangered species which was broadcast in autumn 2009. He also presented the weekly half-hour programme, Nature, on BBC Radio 4 for many years (and has presented many other programmes and series for Radio 4). He has written more than 50 books – including the best-selling field guide to whales, dolphins and porpoises ever published. He has also penned monthly columns in BBC Wildlife and Wanderlust magazines for many years. Mark has an extensive collection of wildlife, nature and environment photographs taken on all seven continents and in more than a hundred countries – which are sold through picture agencies around the world and through his website. And for many years Mark was the Chairman of the Judging Panel for the prestigious Wildlife Photographer of the Year Competition.