Net ProfitBeautiful black and white comix about Cetacea! "Porpoises some people call them dolphins others confuse them with dolphin fish. Some people consider them as intelligent as people but to the tuna industry they are simply net profit. This book is dedicated to the great order of mammals called Cetacea porpoises, dolphins, and whales and to the process of putting people and porpoises back on the same wavelength." Published in 1976 by Michael J. Becker and