A/RES/60/31 abandoned gear, fish discards and post-harvest losses, including juvenile fish, consistent with international law and relevant international instruments, including the Code, and in particular to consider measures including, as appropriate, technical measures related to fish size, mesh size or gear, discards, closed seasons and areas and zones reserved for selected fisheries, particularly artisanal fisheries, the establishment of mechanisms for communicating information on areas of high concentration of juvenile fish, taking into account the importance of ensuring confidentiality of such information, and support for studies and research that will reduce or eliminate by-catch of juvenile fish; 52. Encourages States and entities referred to in the Convention and in article 1, paragraph 2 (b), of the Agreement to give due consideration to participation, as appropriate, in regional and subregional instruments and organizations with mandates to conserve non-target species taken incidentally in fishing operations; 53. Requests States and regional fisheries management organizations and arrangements to urgently implement, as appropriate, the measures recommended in the Guidelines to Reduce Sea Turtle Mortality in Fishing Operations11 and the International Plan of Action for Reducing Incidental Catch of Seabirds in Longline Fisheries in order to prevent the decline of sea turtles and seabird populations by reducing by-catch and increasing post-release survival in their fisheries, including through research and development of gear and bait alternatives, promoting the use of available by-catch mitigation technology, and promotion and strengthening of data collection programmes to obtain standardized information to develop reliable estimates of the by-catch of those species; VIII Subregional and regional cooperation 54. Urges coastal States and States fishing on the high seas, in accordance with the Convention and the Agreement, to pursue cooperation in relation to straddling fish stocks and highly migratory fish stocks, either directly or through appropriate subregional or regional fisheries management organizations or arrangements, to ensure the effective conservation and management of such stocks; 55. Urges States fishing for straddling fish stocks and highly migratory fish stocks on the high seas, and relevant coastal States, where a subregional or regional fisheries management organization or arrangement has the competence to establish conservation and management measures for such stocks, to give effect to their duty to cooperate by becoming members of such an organization or participants in such an arrangement, or by agreeing to apply the conservation and management measures established by such an organization or arrangement; 56. Invites, in this regard, subregional and regional fisheries management organizations and arrangements to ensure that all States having a real interest in the fisheries concerned may become members of such organizations or participants in such arrangements, in accordance with the Convention and the Agreement; 57. Encourages relevant coastal States and States fishing on the high seas for a straddling fish stock or a highly migratory fish stock, where there is no subregional or regional fisheries management organization or arrangement to establish conservation and management measures for such stocks, to cooperate to establish such an organization or enter into another appropriate arrangement to 12