<http://schema.org/about>
"Every year, the Natural Resources Defense Council runs a survey of our beaches and marine habitats to find out which are safe and which need help to recover from abuse. Earlier in the month, the organization put out a map"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/how-safe-is-your-beach-nrdcs-latest-report-reveals-marine-health.html>