The ocean covers more than seventy percent of Earth's surface and plays a central role in shaping our climate, supporting life, and influencing human history. This book, generated by artificial intelligence, brings together a broad range of facts and explanations about the world's seas. You will find clear accounts of ocean geography, marine ecosystems, currents, tides, and the creatures that inhabit different depths. The book also covers topics such as the water cycle, ocean chemistry, and the effects of human activity on marine environments. Whether you are approaching the subject for the first time or looking to refresh your knowledge, this collection offers a straightforward and informative overview of what science has come to understand about our oceans.