👉 Polymetallic nodules are rich in valuable metals and rare earth elements 👉 Deep-sea mining is currently off-limits due to a lack of legal clarity 👉 The United Nations Convention on the Law of the Sea (Unclos) states that resources in international waters are the common heritage of humankind 👉 The International Seabed Authority (ISA) is responsible for finalizing a general mining code 👉 Environmental concerns have stalled the completion of the code