Sylvia Earle's The World is Blue is the kind of book that serves well as an introduction to the concept of Oceanspace. Indeed, it is more than just an introduction. It is a pail of cold water thrown upon anyone still asleep to the fact that humanity is committing suicide -- and in the process, is despoiling the habitat of many other species who are just trying to do their day job. I would recommend this book to anyone who hasn't thought about the subject before. Maritime analysts and marine biologists might find it a bit of a bore, but one can't please everyone.
Earle was the former Chief Scientist for the U.S. NOAA in 1990 and her work reveals this pedigree in many ways. Her writing is clean and straightforward; she provides plenty of interesting personal anecdotes to liven up what might otherwise be a dull litany of sins and penances; she seems particularly enamored of the authority of international and national organizations without any clear idea of how to resolve the problem and limits of power; and she supplies ample statistics and information to back up claims of destruction and unsustainability.
With respect to the latter, we have seen the pernicious political ramifications of poor factchecking. Get one trivial detail wrong, and large swaths of humanity will promptly disregard your message no matter how important, as if they themselves had never made a single mistake in their life.
It is moderately worrisome to me, then, that at random I found a claim (p.139) that a thousand years ago there were fewer than 300,000 people on Earth. Oops. It was actually 300 million. Whoever was Earle's factchecker was must now commit seppuku, preferably with a sushi knife, to atone for this shame. Thousands, millions, what's the difference? Well the difference is that when you write a book about sustainability or unsustainability, you have to get the numbers right. Because in the final analysis, sustainability is a simple equation of (consumption per capita) x (total population) = (total consumption). Overfishing is a total load problem. Pollution is a total load problem. Humanity is a total load problem.
Anyhoo. I haven't checked all the other numbers and I don't intend to. I don't even claim the necessary expertise to do so. One slip of the pen does not a spilled inkwell make. I will just assume that all the other facts and factoids in the book are reasonably accurate and move on to the next subject: compliance.
"There oughta be a law!" or its international equivalent, "There oughta be a treaty!" holds no water today. Or it's a leaky hull, let's put it that way. You make a law, you make a treaty, you better damn well back it up with military/police force. Otherwise it's just grand kabuki theatre on a planetary scale. I find no fault at all with Earle's recommendations on what to do to conserve marine life. Mysteriously absent are the recommendations on what to do when people and nations, some of them armed, refuse to cooperate. Maybe Earle just doesn't want to go there because she knows the answer.