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Where is Earth’s widest continental shelf located?

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Map graphic showing the boundaries of the five oceans-Pacific, Atlantic, Indian, Arctic, and Southern-using color-coded regions. Four different map projections are included: North Pole view, South Pole view, International Date Line view, and Greenwich Meridian view, each displaying the oceans' extents around the continents. — ocean Earth's oceans and their marginal seas cover nearly 71 percent of the planet's surface.

Earth’s largest continental shelf is located off the coast of Siberia, extending approximately 1,500 km (about 930 miles) into the Arctic Ocean.1