MPAs in one form or another are becoming increasingly popular as tools for managing and conserving marine species and ecosystems. The Convention on Biological Diversity called for 10% of the world's ocean to be protected using some form of closed area by 2010, although the target deadline has since been pushed back to 2020. The World Parks Congress called for 20% of the oceans, including the high seas, to be protected within reserves by 2012, and the World Summit on Sustainable Development called for the creation of a global network of comprehensive, representative and effectively managed marine protected areas by 2012.