If you imagine fish as birds of the ocean, they fly through forests and over fields which grow in the rich soil of the continental shelf.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/south-africa-alarm-seabed-destruction-sa-phosphate-mining
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/all-africa
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oceans-and-seas
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-africa
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/marine-life
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/marine-ecosystems
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa