The other agreements that make up the system are:
- Convention on the Conservation of Antarctic Seals (CCFA, London, 1972)
- Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR, Canberra, 1980).
- Protocol to the Antarctic Treaty on Environmental Protection (Madrid, 1991).
Although the CCFA and CCAMLR are independent agreements, they contain provisions that represent a commitment by the Parties to essential aspects of the Antarctic Treaty, such as Article IV on the legal status of territorial claims. Only Parties to the Antarctic Treaty may accede to the Protocol on Environmental Protection.