National Geographic Ultimate Ocean Encyclopedia: The Most Complete Ocean Encyclopedia in History (New Edition)國家地理 終極海洋百科：史上最完整的海洋大全(新版)

The ocean covers more than 70% of the earth's surface and produces half of the oxygen in the atmosphere. However, it is still mysterious to us and full of many unknowns and mysteries. "Ultimate Ocean Encyclopedia" will take readers to travel across the four oceans, from the surface to the bottom of the water, explaining the structure of the ocean step by step, and introducing various wonderful marine animals.           The four oceans are not all the same, just sea water. You will learn what are the differences between them, and you will also discover the characteristics of animals living in different depths and areas of the sea, and how they adapt to the environment.     This book uses simple and easy-to-understand words to explain in detail the science and geography of the ocean, including ocean currents, tides, waves, the formation of islands, and the interaction between climate and ocean. There are also chapters on coastal areas, allowing readers to understand how the ocean shapes