Take a deep breath and dive right into this jam-packed reference book, which covers everything from tsunamis and sea turtles to riptides and reefs! Learn all about the creatures, science, and ecology of our oceans, which cover more of the planet than all the continents and are just as important! Travel through all parts of the ocean to learn how it affects of our world, including storms and climate. Amazing facts, photos, illustrations, and diagrams are found throughout this book, along with conservation tips, weird-but-true facts, and a mini ocean atlas. Challenges to the health of our ocean and its creatures are also presented along with what people are doing to keep it pristine for generations to come.