Not all icebergs are white

Most of us think of icebergs as white, but they actually come in a range of shades between bright blue and dark green. Some are even striped. These icebergs are clear because, unlike glacier ice, they don't contain any bubbles. Instead, they are made of frozen seawater, which freezes to the underside of the ice shelf floating above it. Nature's palette for these icebergs comes from the sea, and from the movement of the ice sheet across the Antarctic continent.