Manganese nodules – spawning grounds for deep-sea octopuses

Mineral resources, such as these manganese nodules, lie deep on the beds of the Pacific and Atlantic Oceans. In addition to manganese and iron, they also contain precious metals such as copper, cobalt, nickel, and zinc. Because of the serious risk to the environment, concrete plans to mine these raw materials have not yet been realized. Intensive research is being carried out on this topic, however.