Major observed threats to the world's coral reefs include tourism, poison fishing, overexploitation, sedimentation, coral harvesting, dynamite fishing and pollution. This graphic explains which activities or conditions are affecting various coral reefs throughout the world. The graphic 'Major Threats to Reefs' shows the percentage of reefs that are threatened by overexploitation, coastal development, inland pollution and marine pollution, and the...

The thick-billed murre and common murre have ranges 1,000,000 km2 and number in the millions or tens of millions of breeding pairs. However global populations are declining, although increases have occurred in some regions. These seabirds, together with other species of alcids, face a number of direct and indirect marine and terrestrial threats, which influence their survival and reproductive success. These include transboundary pollutants, by-ca...

This graphic illustrates the strong link between areas with high densities of industrial activity and zones of seasonally oxygen-depleted waters. There is a strong link between areas with high densities of industrial activity and zones of seasonal oxygen-depleted waters. In recent years there has been an increasing focus on treating and reducing municipal and industrial waste, and on reducing nitrogen levels in agricultural runoff. However, less...