A lot of people do not realise that the late, great Arthur C Clarke had not one, but two passions. One was space (obviously) but the other one was the ocean, which is the subject of this novel.
It is the late 21st century, and the world has been transformed by humankind literally farming the ocean. Vast plankton farms have utterly abolished hunger worldwide, and whales are herded, bred and milked like cattle.
Into this watery world comes Walt Franklin - clearly a competent man, but a man with a secret. Why has he been fast-tracked into the profession? What was his previous occupation? Why does he have the support of the upper management? You will have to read it to find out.
The book covers various underwater adventures as well as the political machinations of the time. Clarke was always incredibly optimistic about the future of the human race, and this is another of his many novels where war has been abolished, and hunger has been consigned to history. Nice if it were so, but somehow I have my doubts.
The book is a nice gentle one, and is reasonably enjoyable as long as you don't expect too much from it. It does not have the wonder or high adventure of Rendezvous with Rama or 2001, but Clarke fans will find it worthwhile I think.