A video about and around the launching of World Heritage Report 44: World Heritage in the High Seas: An Idea Whose Time Has Come.
The the report presents five sites that illustrate different ecosystems, from biodiversity-rich areas to the natural phenomena that can only be found in the depths of the ocean. Each of these sites could be recognized as having outstanding universal value, a key principle of the World Heritage Convention, where spectacular qualities of certain sites are seen to transcend national boundaries.

on this subject: World heritage in the high seas: an idea whose time has come (unesdoc.unesco.org)