Ha! I researched that. I had no idea how controversial and dynamic topic this is! But anyway, I was still pointing ( at least partially) to the Southern Ocean and I was absolutely correct, if you consider 1928 definition ;-) !
"A draft fourth edition of Limits of Oceans and Seas was circulated to IHO member states in August 2002 (sometimes referred to as the "2000 edition" as it summarized the progress to 2000). It has yet to be published due to 'areas of concern' by several countries relating to various naming issues around the world – primarily the Sea of Japan naming dispute – and there have been various changes, 60 seas were given new names, and even the name of the publication was changed. A reservation had also been lodged by Australia regarding the Southern Ocean limits. Effectively, the 3rd edition (which did not delineate the Southern Ocean leaving delineation to local hydrographic offices) has yet to be superseded."