oceanography

"Examine the purpose, function, history, and people of special government agencies with this exciting and informative new series. Young readers will learn about the important missions undertaken, tools and technology used, and career options available for each agency. Each book in the Power, Authority, and Governance series includes timelines, charts, graphs, diagrams, maps, and vibrant photos sure to engage young readers and inspire a love of reading and learning"--.

"[An] introduction to the comprehensive world history of diving . . . How do you breathe underwater? What tools can we use to go deeper and deeper into the oceans? And...what's down there? Two-thirds of our Earth is covered in ocean, yet only 5% of it has been explored. Dive deep into our long history of sea exploration to learn why, how, and when humans have dived, and uncover our biggest questions about what hides in the Earth's deepest waters"--Provided by publisher.

Eight-year-old Jack and his seven-year-old sister, Annie, learn about the ocean, solve the mystery of its fabled sea monster, and gain compassion for their fellow creatures after joining a group of nineteenth-century explorers aboard the H.M.S. "Challenger.".

"Provides a startling portrait of what the Earth might look like under the rising and falling water levels of climate change"--Back cover.

"Seen from space, Earth is a swirl of blue and white. The blue is Earth's oceans, which cover 70 percent of its surface. Yet the ocean is the most unexplored region of our planet. From Shore to Ocean Floor is the story of how humans went from building the first boats to discovering the secrets of the deep. Marvel at incredible scientific discoveries, be dazzled by some of the most exciting new species, and admire the incredible people who took the very first steps below the surface"--.

"From New York Times bestselling author Susan Casey, an awe-inspiring portrait of the mysterious world beneath the waves, and the men and women who seek to uncover its secrets For all of human history, the deep ocean has been a source of wonder and terror, an unknown realm that evoked a singular, compelling question: What's down there? Unable to answer this for centuries, people believed the deep was a sinister realm of fiendish creatures and deadly peril. But now, cutting-edge technologies allow scientists and explorers to dive miles beneath the surface, and we are beginning to understand this strange and exotic underworld: A place of soaring mountains, smoldering volcanoes, and valleys 7,000 feet deeper than Everest is high, where tectonic plates collide and separate, and extraordinary life forms operate under different rules. Far from a dark void, the deep is a vibrant realm that's home to pink gelatinous predators and shimmering creatures a hundred feet long and ancient animals with glass skeletons and sharks that live for half a millennium-among countless other marvels. Susan Casey is our premiere chronicler of the aquatic world. For The Underworld she traversed the globe, joining scientists and explorers on dives to the deepest places on the planet, interviewing the marine geologists, marine biologists, and oceanographers who are searching for knowledge in this vast unseen realm. She takes us on a fascinating journey through the history of deep-sea exploration, from the myths and legends of the ancient world to storied shipwrecks we can now reach on the bottom, to the first intrepid bathysphere pilots, to the scientists who are just beginning to understand the mind-blowing complexity and ecological importance of the quadrillions of creatures who live in realms long thought to be devoid of life. Throughout this journey, she learned how vital the deep is to the future of the planet, and how urgent it is that we understand it in a time of increasing threats from climate change, industrial fishing, pollution, and the mining companies that are also exploring its depths. The Underworld is Susan Casey's most beautiful and thrilling book yet, a gorgeous evocation of the natural world and a powerful call to arms.".

"Through stories of history, culture, and animals, the author explains how water temperature, salinity, gravity, and the movement of Earth's tectonic plates all interact in a complex dance, supporting life at the smallest scale-plankton-and the largest-giant sea turtles, whales, humankind. From the ancient Polynesians who navigated the Pacific by reading the waves, to permanent residents of the deep such as the Greenland shark that can live for hundreds of years, she introduces the messengers, passengers, and voyagers that rely on interlinked systems of vast currents, invisible ocean walls, and underwater waterfalls"--Provided by publisher.

"Not enough is being done to protect the world's oceans. Instead, human activity is causing them to become less and less healthy every year. While almost everyone knows that the oceans are important, many do not understand exactly how important they are. Experts warn that the oceans could eventually be harmed so much that life on earth will be dramatically altered"--Provided by publisher.

An introduction to the oceans of the world.

"Learn of [the Earth's oceans through] their composition and underwater features. Also study the differences and similarities of the two types of ocean currents: the surface and the deep ocean"--Amazon.