Links:
[1] http://admin.indiaenvironmentportal.org.in/news/gulf-mexico-dead-zone-smaller-usual
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/voice-america
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/marine-ecosystems
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gulf-mexico
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/marine-life