Laptev Sea Laptev Sea The Laptev Sea (; ) is a marginal sea of the Arctic Ocean. It is located between the northern coast of Siberia, the Taimyr Peninsula, Severnaya Zemlya and the New Siberian Islands. Its northern boundary passes from the Arctic Cape to a point with co-ordinates of 79°N and 139°E, and ends at the Anisiy Cape. The Kara Sea lies to the west, the East Siberian Sea to the east. The sea is named after the Russian explorers Dmitry Laptev and Khariton Laptev; formerly, it had been known under various names, the last being Nordenskiöld Sea (), after explorer
East Siberian Sea 11,430 km, respectively; while the respective inflow values are 3,240, 8,800 and 9,230 km. The surface water temperature decreases from south to north. In winter it varies between −0.2 and 0.6 °C at the river deltas and from −1.7 to −1.8 °C in the northern sea part. In summer, it warms to 7–8 °C in the bays and inlets and to 2–3 °C in the ice-free sea zones. Surface water salinity increases from southwest to northeast. In winter and spring, it is 4–5‰ (parts per thousand) near the deltas of the Kolyma and Indigirka rivers. It increases to 28–30‰ in