East Siberian Sea main land]. "On the North." A line from the Northernmost point of Wrangel Island (179°30'W) to the Northern sides of the De Long Islands (including Henrietta and Jeannette Islands) and Bennett Island, thence to the Northern extremity of Kotelni Island. "On the East." From the Northernmost point of Wrangel Island through this island to Cape Blossom thence to Cape Yakan on the main land (176°40'E). Because it is open towards the Arctic Ocean in the north, the main gulfs of the East Siberian Sea, like the Kolyma Bay, the Kolyma Gulf and the Chaunskaya Bay, are all located in its
Northeast Siberian taiga world, due the very sparse population and difficult access. It is mostly in the Sakha Republic (Yakutsk region). The ecoregion covers an area about 1,800 km west-east by 1,000 km north-south. The western border is the Lena River; beyond that is the East Siberian taiga ecoregion. The eastern edge is the Kolyma River, beyond which farther east is the Bering tundra ecoregion. To the north is a strip Arctic coastal tundra about 100 km wide, the Northeast Siberian coastal tundra ecoregion. The Okhotsk Sea to the south completes the outline of the ecoregion, but internally the Verhkoyansk and Chersky mountains