The Coast Ranges are a series of mountain ranges located along the western coast of North America, primarily in the states of California, Oregon, and Washington. These mountains stretch from the northern part of British Columbia in Canada down to Southern California, forming a natural barrier between the Pacific Ocean and the inland valleys. The Coast Ranges are characterized by their rugged terrain, diverse ecosystems, and rich biodiversity. They are home to various plant and animal species, many of which are unique to the region. The ranges also play a crucial role in influencing local climate patterns and water resources.