Archaeologists have uncovered evidence of a previously unknown 4,500-year-old maritime exchange network, dubbed the 'Nephrite and Sea-Otter' Seaway. By analyzing trace elements in nephrite jade tools found in the Aleutian Islands, researchers traced the raw materials to the Kamchatka Peninsula in modern-day Russia. This discovery suggests that prehistoric seafaring communities possessed the navigational skills to cross hundreds of miles of the volatile North Pacific.
The study also revealed that sea-otter pelts were a primary commodity in this exchange, with isotopic signatures in bone fragments indicating that furs were being traded for high-quality lithic materials. This research fundamentally changes our understanding of early human migration and economic connectivity in the sub-arctic, proving that the Bering Sea was a vibrant highway for cultural and material exchange long before the arrival of Europeans.