Oceans cover almost three-fourths of the earth’s surface. The oceans' waters, the air and sun above the oceans and the land beneath them contain enormous energy resources. These offshore energy resources include non-renewable energy sources such as oil, gas and also maganese nodules and renewable energy sources, such as wind energy, wave energy, thermal energy, tide and ocean current energy and also sun energy. Offshore renewable resources are the focus of many alternative energy projects.
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