Mark Carwardine is a zoologist, writer, photographer, consultant and broadcaster with a special interest in marine wildlife. He has written more than 40 books, including several be...view moreMark Carwardine is a zoologist, writer, photographer, consultant and broadcaster with a special interest in marine wildlife. He has written more than 40 books, including several bestsellers, and presents Nature and a wide variety of other natural history programmes on BBC Radio 4. A keen diver for many years, he leads shark and whale-watching holidays to many parts of the world and is an ardent supporter of several wildlife conservation organisations.view less