Tabular icebergs are large, flat-topped ice masses that break off from glaciers or ice shelves, primarily in polar regions. They are characterized by their rectangular shape and can be several kilometers long and wide. These icebergs typically float in the ocean, with about 90% of their mass submerged underwater. Unlike other types of icebergs, which may have irregular shapes, tabular icebergs are more stable and can remain intact for extended periods. They are often found in areas like the Antarctic and Greenland, where significant ice melting occurs due to climate change and rising temperatures.