Abstract The persistence of IUU fishing in the CCAMLR Area undermines the intrinsic values of CCAMLR and of the Antarctic Treaty. Thus, eliminating IUU fishing must continue to be a top priority for CCAMLR as an integral part of the Antarctic Treaty System. Thus far, in spite of the number of Conservation Measures on IUU fishing adopted by CCAMLR, there are still significant steps that CCAMLR Members can take individually and collectively to eliminate IUU fishing in the CCAMLR Area. An important step in the development of global instruments to tackle this problem is the Agreement on Port State Measures to Prevent, Deter and Eliminate Illegal, Unreported and Unregulated Fishing (PSMA). CCAMLR should take steps to encourage its Members to sign and ratify this agreement as soon as possible. In addition, CCAMLR should adapt its port State measures to the international minimum standard provided by the PSMA, while not weakening any of its current measures in force. At the same time, and in the spirit of promoting the effective implementation of port State measures, CCAMLR should establish mutual recognition of IUU vessel lists with other RFMOs and require the use of IMO numbers for all fishing vessels operating in the CCAMLR area.