What is an Iceberg? .

It is well known that the Titanic sank after hitting a floating iceberg. But what are they, and where do they come from?

• Formation: In polar regions, the ground is covered in massive sheets of ice spanning hundreds of kilometers. Due to changes in the land, huge chunks of this ice sometimes break off and float away into the sea.

• The "Hidden" Danger: Icebergs have no fixed shape and look like floating mountains of ice. Interestingly, only about 1/6th of an iceberg is visible above the water surface; the rest is hidden underwater.

• Risks: Ship captains often see only the tip and mistake it for a small piece of ice. This has caused many disasters. For example, in 1959, the ship Hans Hedtoft hit an iceberg near Cape Farewell and sank, killing 95 people.

• Future Use: Since icebergs are made of frozen freshwater, researchers are looking for ways to use them to provide fresh drinking water when they melt.