73. Decides to establish an Ad Hoc Open-ended Informal Working Group to study issues relating to the conservation and sustainable use of marine biological diversity beyond areas of national jurisdiction:
73. 决定设立不限成员名额非正式特设工作组，研究与国家管辖范围以外区域的海洋生物多样性的养护和可持续利用有关的问题，以便：