Pack ice refers to a large mass of floating ice that has been compressed and jammed together by the wind and currents. It is typically found in polar regions, such as the Arctic and Antarctic, where sea water freezes to form icebergs and floes. Pack ice is composed of varying sizes and shapes of ice fragments and can cover vast areas, creating a solid and irregular surface on the ocean. It poses challenges for navigation and can impact marine ecosystems and wildlife habitats.
