The ocean located to the west of South America is the Pacific Ocean. It is the largest and deepest ocean on Earth, playing a vital role in global climate and ecosystems. The Pacific Ocean's vast expanse influences weather patterns on the continent, including phenomena like El Niño. It serves as a crucial trade route, supporting economies in the countries situated along its coasts, such as Chile, Peru, and Ecuador. The ocean is also rich in marine biodiversity and offers opportunities for fishing, tourism, and research, making it essential for both ecological and economic well-being.