This draft is aimed to describe the process for the designation of an MPA in Domain 1 led by Argentina and Chile. The process has resulted in the compilation, analysis, integration and display of a large amount of information, not only contributing to the best science available but also providing a platform for the sharing and visualization of information. We highlight the multinational approach in all stages of the decision making process towards identifying Priority Areas for Conservation (PAC) in Domain 1. A technical description of the software and analyses used for the identification of the PAC is provided. Thereafter, considerations of both ecological and management components are described to finally arrive to a Domain 1 MPA model to be discussed among members during the EMM-2017. The MPA management will be done in accordance with the Objectives of the Convention. Having in consideration all the issues mentioned above, a multinational Research Steering Committee is proposed in order to engage all interested Members in the discussion and development of a Research and Monitoring Plan, thus reaching the best available solution for the management of the proposed MPA, one that takes into account conservation objectives, as well as other ecosystem services, such as krill fishing.