of its water, is home to more than 90 percent of its living species, produces more than 60 percent of the oxygen on our planet, carries 90 percent of all cargo shipped between countries, produces enough protein to feed a billion people, contributes trillions of dollars to the global economy, regulates the climate, produces weather systems, provides us with all sorts of fun and interesting activities, inspires us, and so much more. Despite all this, we went ahead and totally dissed the ocean by calling our planet Earth … yeah, Earth as in land, ground, dirt. Wouldn’t it have been much more appropriate to call it something like Planet Ocean, or maybe Oceanus, after the son of Uranus (Heaven) and Gaia (Earth)? We certainly think so.
But, nobody asked us, did they?
So, to help reconcile this slight in some small way, Philippe and I decided to write a book about the ocean and plaster its name all over the cover. We want everyone to know how truly amazing the ocean is and to share our fascination with it and its many crazy, astonishing, extraordinary, and sometimes creepy inhabitants. Our purpose in writing this book is to introduce generations of readers, including you, to the ocean from various perspectives — geophysics, biology, meteorology, ecology, economics, and more — in a fun and engaging way, so you can gain a broad understanding of what the ocean is all about without dozing off in the process.
As lifelong ocean explorers, we felt like this kind of primer on all things ocean, fun enough for the ocean novice but thorough enough for the ocean expert, was missing in the market. So, to plug that gap, we wrote this book and packed it chock full of photographs and illustrations because, well, words alone don’t do the ocean justice, and because we’re fortunate to have generous friends who are some of the most amazing photographers in the world and were willing to give us access to their archives.
Perhaps even more important is that we want to convey the vital role the ocean plays in humanity’s survival; even if you live in the middle of the desert, the ocean still affects you and your quality of life. Unfortunately, the ocean is taking the brunt of humanity’s ecological abuses, which spells trouble for all of us. The good news is that each and every one of us has the power to save it. By working together to stop and perhaps even reverse the damage we’ve caused while optimizing our use of the ocean’s vast resources, we can return the ocean to abundance. Our intent isn’t to be Debbie or Danny Downer. Our goal is to have fun, engage you, and maybe even recruit you to join the cause of loving and protecting the sea.
So, tighten up your swimsuit, strap on your scuba gear, and get ready to dive into what we feel is the most fun and fascinating of topics, the ocean.
About This Book
Welcome to Oceans For Dummies. In this book, we serve as your personal tour guides to Earth’s watery wonderland. We lead you on a journey from shore to open ocean and from surface to seafloor, examining the ocean from multiple perspectives — its history, biology, ecology, economy, and much more. Along the way, we hope to expand your appreciation and general understanding of the ocean and its inhabitants. We also hope to increase your awareness of the opportunity to interact with the ocean in mutually beneficial ways, so we can all enjoy its vast resources while preserving it for future generations.
To make the content more accessible, we divided it into the following six parts:
Part 1, “Getting Started with Your Ocean Voyage,” touches on key topics covered throughout the book, highlights the many ways the ocean enhances our lives, and traces the origin of the ocean and the evolution of marine life (yeah, all that in three short chapters).
Part 2, “Finding Your Way Around,” divides the ocean into zones and ecosystems (communities of interdependent marine organisms) and takes a deep dive to the seafloor to scope out what’s on, in, and below it — you may be surprised.
Part 3, “Sampling the Vast Diversity of Sea Life,” consumes a vast majority of the book because, frankly, it’s the topic we find most fun and fascinating. Here, you meet shrimp that can smash open aquarium tanks with their bare knuckles; the brainy octopus, which can twist the lid off a jar using its suction-cupped grip (very handy in the kitchen); the largest creature on the planet, ever, which feeds on the smallest of prey; and numerous other creepy, freaky, and awesome characters.
Part 4, “Grasping Basic Ocean Physics,” looks at the ocean as a part of an integrated system comprised of water, land, atmosphere, the sun, the moon, and certain physical forces that make Earth what it is. In this context, we explain how water, heat, and nutrients are circulated around the ocean and around the globe and how the ocean helps to regulate climate and drive weather.
Part 5, “Understanding the Human-Ocean Connection,” focuses on the many ways the ocean benefits our lives, how the exploitation of its resources are governed, and how we humans need to transition our relationship with the ocean from one of dependence to interdependence to fully enjoy its benefits while preserving its health. In this part, we also dip into the topic of ocean exploration — showcasing the innovations and technologies that have driven its development over the last couple hundred years.
Part 6, “The Part of Tens,” features three “top ten lists” — the ten deadliest sea creatures, ten ocean myths we bust wide open, and ten easy ways you can help to preserve the ocean for future generations.
In short, this book serves as your guide to almost everything about the ocean in a fun and accessible way. And while some of these subjects deserve an entire book for themselves (hello, nudibranchs!), we worked hard to find the balance between breadth and depth.
Foolish Assumptions
All assumptions are foolish, and we’re always reluctant to make them, but to keep this book focused on the right audience and ensure that it delivers the information and insight you need to grasp a topic as broad as the ocean, we had to make the following foolish assumptions about you:
You’re curious about the ocean and eager to discover more about it.
You’re mostly interested in marine life, such as turtles, sharks, and dolphins and ecosystems, such as coral reefs and kelp forests.
You’re concerned about the health of the ocean, and you want to find out more about what can be done, what’s being done, and what you can do to help the ocean thrive.
Other than those three foolish assumptions, we can honestly say that we can’t assume much more about you. For all we know, you could be a precocious 4-year old or a spirited octogenarian, you may be a student, a white collar or blue collar worker, a housewife or househusband, a doctor, a lawyer, a plumber or a construction worker. You could be living on an island, a coast, deep in the Amazon jungle, or on a farm in the middle of Iowa. Regardless of your demographic, we applaud your interest in the ocean and your eagerness to expand your knowledge and understanding of Earth’s most precious blue gem.
Icons Used in This Book
Throughout this book, icons in the margins highlight certain types of valuable information that call out for your attention. Here are the icons you’ll encounter and a brief description of each.
