Some of these issues reflect weak decision-making mechanisms within RFMOs, which leaves the potential of such issues undermining the effectiveness of collective management. As a result, overfishing continues to be a problem in some areas of the high seas including in RFMO-managed areas. At the outset it is worth highlighting that many fisheries are already fully subscribed and some are overfished. Hence an important policy objective is to ensure that international and national fisheries are managed in a sustainable way and that fishing capacity is brought into line with available fishing opportunities.