A century into the future, humanity lives mostly on the sea. Gigantic whale herds are tended by submariners, and vast plankton farms feed the world.

Walter Franklin, once a space engineer, now works on a submarine patrol. This novel tells the story of his adventures, including Franklins capture of an enormous kraken at 12,000 feet under the sea, his search for a monstrous sea serpent, and the thrilling rescue of a sunken submarine-all set against the backdrop of a futuristic world thats both imaginative and believable.