Before revision: Polymetallic nodules Polymetallic nodules on the deep seabed in the CCZ Example of manganese nodule that can be found on the sea floor Polymetallic or ferromanganese nodules are found at depths of , largely on abyssal plains, and in all major oceans, but also in shallow waters like the Baltic Sea and in freshwater lakes.
After revision: Polymetallic nodules Polymetallic nodules on the deep seabed in the CCZ Example of manganese nodule that can be found on the sea floor Polymetallic nodules are found at depths of in all major oceans, but also in shallow waters like the Baltic Sea and in freshwater lakes.