Thirteen ACAP species (out of 31 currently listed) are currently showing overall population declines. The population trends of a large proportion of 16 ACAP species with significant distribution in the CCAMLR area are still uncertain or showed declines during the last two decades, and two thirds of the total is listed by the IUCN as threatened. The greatest threat to the ACAP species is incidental mortality in longline and trawl fisheries. CCAMLR has achieved outstanding success in reducing seabird bycatch in the area under its jurisdiction to negligible levels. However, the species distributed in the Convention Area are highly migratory and largely extend their distribution in neighbouring waters, where bycatch is still occurring, both in jurisdictional waters as well as those administrated by RFMOs. Addressing the pervasive threat of fisheries bycatch for species as wide-ranging as albatrosses and petrels requires concerted and collaborative management actions covering both national and international waters. Bycatch of seabirds in adjacent regions may undermine the success that CCAMLR has achieved to date, and the conservation status of those species that breed or forage in the Convention Area is dependent on efforts to minimise bycatch both within the CCAMLR area, and importantly outside of it, both in jurisdictional waters and the high seas.