LESSON 3 · Into the Abyss: Ocean Depths
Deep-Sea Mining Debate
The deep ocean floor contains trillions of dollars worth of polymetallic nodules — potato-sized lumps rich in manganese, cobalt, nickel, and copper. These metals are essential for batteries and renewable energy technology.

The International Seabed Authority governs mining in international waters. Environmentalists warn that dragging collectors across the abyssal plain would destroy ecosystems that took millions of years to develop.