Polar hazard is a term used to describe the environmental and safety risks associated with the Arctic and Antarctic regions. It includes the dangers posed by icebergs, glaciers, and sea ice. The term 'berg' refers to an iceberg, which is a large mass of floating ice that has broken off from a glacier or ice shelf. A 'FLOE' is a sheet of floating ice, and an 'icefloe' is a large sheet of floating ice. All three of these terms are related to polar hazard and the risks associated with the Arctic and Antarctic regions.