Coordinates: 79°N 80°E / 79°N 80°E
Bathymetric/topographic map of the Arctic Ocean and the surroundings
The Siberian Shelf, one of the Arctic Ocean coastal shelves (such as the Milne Ice Shelf), is the largest continental shelf of the Earth, a part of the continental shelf of Russia. It extends from the continent of Eurasia in the general area of North Siberia (hence the name) into the Arctic Ocean. It stretches to 1,500 kilometers (930 mi) offshore. It is relatively shallow, with average depth of 100 m. A number of islands are within the shelf, including the Wrangel Island, Novaya Zemlya, and the New Siberian Islands. 
It is encompassed by the Kara Sea, Laptev Sea, and East Siberian Sea, and respectively subdivided into the Kara Shelf, the Laptov Shelf and the East Siberian Shelf.
Eastwards it merges into the Chukchi Shelf (of the Chukchi Sea) shared by Eurasia and North America (i.e., by Russia and the United States).
Westwards it merges into the Barents Shelf of the Barents Sea.
Also, the New Siberian Islands and the New Siberian Rift Basin define the 'New Siberian Shelf.'
According to the split of the high Arctic by the Lomonosov mid-ocean ridge into the Eurasian Basin and Amerasian Basin, the Siberian Shelf is split between the Eurasian Shelf and the Amerasian Shelf.