Manganese nodules are small, round mineral formations found on the ocean floor, primarily composed of manganese, iron, and other metals. They typically form over millions of years through the accumulation of minerals from seawater and sediment. These nodules can vary in size, often resembling potatoes, and are found in deep-sea environments, particularly in areas like the Clarion-Clipperton Zone. These nodules are of interest for their potential economic value, as they contain valuable metals such as copper, nickel, and cobalt. Mining companies are exploring ways to extract these resources, but environmental concerns regarding deep-sea mining practices remain a significant issue.