The Trump administration has proposed a controversial plan to open up protected areas in the Pacific and Atlantic oceans for offshore drilling.

The five-year plan expands drilling to most of the US outer continental shelf, including California and Maine, where drilling has been blocked for decades.

Environmentalists called it a "shameful giveaway" to the oil industry.

The move fulfils US President Donald Trump's promise to boost domestic oil and natural gas production.

US Interior Secretary Ryan Zinke unveiled the plan on Thursday(Jan.04), saying it would boost the US economy.