Collins Gem Whales and Dolphins by Mark Carwardine
This Gem explores and explains the world of whales and dolphins. Over 50 species of whale, dolphin and porpoise are illustrated with the author's own photographs. Aspects covered include: evolution; identification; biology; zoological categorization; feeding habits; and predators. The book answers commonly-asked questions, such as how intelligent are dolphins? and should whales be kept in captivity?, and discusses the sensitive subject of whale conservation.