On the tundra shoreline, hunters used harpoons for seals and traveled by kayak when the water opened in summer. Bone and ivory were shaped into needles, harpoon points, and other everyday tools. Rules about sharing and mutual help acted like a social safety net in harsh conditions. When sea ice broke up, families shifted camps to follow fish and marine mammals. Archaeologists later found storage pits, tool remains, and food traces that match this way of life.