Trails the seahorse through secluded waters across the globe in a kaleidoscopic history that mirrors humanity's centuries-old fascination with the animal, sweeping from the reefs of Indonesia, through the back streets of Hong Kong and back in time to ancient Greece and Rome. Marine biologist Helen Scales eloquently argues that seahorses are indeed fish, though scientists have long puzzled over their exotic anatomy and strange sex lives - male seahorses being the only males in the entire animal world to experience childbirth.