Short answers, pulled from the story.
The International Hydrographic Organization drew a precise line on the map in 1935 to define the limits of this Arctic body. That boundary starts at Arctic Cape on Komsomolets Island and extends northward to connect with Cape Rosa Luxemburg.
January brings average temperatures ranging from minus thirty-five to minus forty-two degrees Celsius, with a recorded minimum of minus fifty-eight degrees Celsius at Tiksi. Air temperatures stay below zero degrees Celsius for nine months each year along the southern coast and eleven months in the north.
Approximately seventy percent or 515 cubic kilometers comes solely from the Lena River, which makes it the second largest river discharge system in the world after the Kara Sea. About ninety percent of this annual runoff occurs between June and September, with thirty-five to forty percent arriving in August alone.
Adolf Erik Nordenskiöld became the first person to travel across the whole sea on a steamship named Vega in 1875. Earlier expeditions included Siberian Cossacks reaching the Lena River delta in 1629 and Yakov Permyakov exploring the eastern part in 1712.
In 1985, the Ust-Lena Nature Reserve was established covering 14,300 square kilometers to protect these ecosystems. The reserve safeguards permanent mammal species including ringed seal, bearded seal, harp seal, walrus, collared lemming, Arctic fox, reindeer, wolf, ermine, Arctic hare, and polar bear.