The Dolphin Rider

EONS AGO, down in the green depths of warm oceans, man had his basic origin. And although he evolved into a creature entirely of the upper air, he still has much in common with the air-breathing, slat water mammals who are his ancestral brothers. Except of course that the sea creatures have much greater potential intelligence, are infinitely better adjusted to themselves and thie environment. And have a much longer life span. The gentle dolphins knew exactly what to do when a small human baby fell into their midst. But neither they nor anyone else could fortell what whould develop from this remarkable combination...