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 Franklin’s 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 that’s both imaginative and believable.
Summary from Amazon.com