Mark Carwardine is a zoologist, writer, radio and TV presenter, a wildlife photographer, a wildlife tour operator, and an outspoken conservationist. His TV series include Last Chance to See with Stephen Fry, and for many years he presented the weekly half-hour programme Nature on BBC Radio 4. Mark has written more than 50 books on wildlife and conservation. He has been studying, observing and photographing whales, dolphins and porpoises around the world for more than 30 years.