Overfishing has also been widely reported due to increases in the volume of fishing hauls to feed a quickly growing number of consumers. This has led to the breakdown of some sea ecosystems and several fishing industries whose catch has been greatly diminished.[4][5] The extinction of many species has also been reported.[6] According to a Food and Agriculture Organization estimate, over 70% of the world’s fish species are either fully exploited or depleted.[7] According to the Secretary General of the 2002 World Summit on Sustainable Development, "Overfishing cannot continue, the depletion of fisheries poses a major threat to the food supply of millions of people."[8]