[[file:USGSgashydratemap014.jpg|thumb|300px|Known and inferred locations of gas hydrate occurrence. [http://woodshole.er.usgs.gov/project-pages/hydrates/primer.html Map compiled by the USGS].]] | [[file:USGSgashydratemap014.jpg|thumb|300px|Known and inferred locations of gas hydrate occurrence. [http://woodshole.er.usgs.gov/project-pages/hydrates/primer.html Map compiled by the USGS].]] |