In the afterword ""it is said. . . . that if pigs were kept lean and strong they are capable of swimming fairly long distances"" but that the ancient Greek pirates ""although constantly at sea, rarely learned to swim."" On these exceptional circumstances--pigs with the physique and friskiness of colts and the ability to swim from ship to shore while their captors sink--the slight story turns, putting it out of bounds for kids who like pigs to be pigs and pirates to be powerful. Otherwise there's just the three swineherds who train the pigs--to respond to a signal, among other things, which brings them to the side of the abducting pirate ship and ultimate safety. The stridently colored pictures are another unfortunate story.