Offshore structures that generate electrical power from ocean waves have been deployed but engineering challenges remain.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/harvesting-ocean-wave-energy
[2] http://admin.indiaenvironmentportal.org.in/category/author/jeff-scruggs
[3] http://admin.indiaenvironmentportal.org.in/category/author/paul-jacob
[4] http://admin.indiaenvironmentportal.org.in/category/journal/science
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-technology
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wave-energy
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us