This article highlights Australia's interaction with Asian countries in the development of an international legal instrument on marine biodiversity in areas beyond national jurisdiction (ABNJ). An intergovernmental conference with four planned sessions is currently going on under the auspices of the United Nation's General Assembly (UNGA) for the adoption of a new legal instrument under the United Nations Convention on the Law of the Sea (UNCLOS). Although there is literature on how Australia and Asia have forged closer engagement on matters of trade, security and culture, literature is scarce on how and in what way they can engage in promoting the conservation of ABNJ. In terms of marine environmental discussion, Australia appears to date overall to have aligned itself closely to other western countries and some developed Asian countries. This article examines the potential scope for increased collaboration with Asia on reaching future legal agreement with respect to ABNJ.