Surge in marine refuges brings world close to protected areas goal

Reserves cover more than five times area of US, says report, but enforcement is often poor

A record surge in the creation of marine protected areas has taken the international community close to its goal of creating nature refuges on 17% of the world's land and 10% of seas by 2020, according to a new UN report.

Protected regions now cover more than five times the territory of the US, but the authors said this good news was often undermined by poor enforcement. Some reserves are little more than "paper parks" with little value to nature conservation. At least one has been turned into an industrial zone.