Iceberg

An iceberg is a large mass of freshwater ice that has broken off from a glacier and floats in the ocean. Most of an iceberg is submerged underwater, with only about 10% visible above the surface. This hidden portion can be much larger than what is seen, making icebergs a metaphor for things that are not immediately apparent. For example, in discussions, the visible part of a problem might only represent a small fraction of the underlying complexities. Icebergs are commonly found in polar regions, especially in places like Antarctica and Greenland.