Why Are Icebergs Blue Underneath? The tip of an iceberg appears white while the bottom appears blue due to differences in how light interacts with the ice's structure. At the top, the ice contains many tiny air bubbles and cracks that scatter all wavelengths of visible light. This scattering is diffuse and non-selective, resulting in a white appearance, much like snow. In contrast, the bottom of the iceberg is older, denser ice that has undergone compression, squeezing out most of the air bubble

The breaking of an iceberg is a fascinating natural phenomenon and a rare event to witness, especially when it reveals the deepest part of the ice, which has a darker coloration. Icebergs are large floating masses of ice that break off from glaciers or ice shelves and, over time, move and change shape. The dark color observed at the base of a freshly broken iceberg is the result of physical processes that occur over thousands of years. The ice at the base is much denser and older than the ice on