Barrier beaches and islands occur worldwide, lying offshore of nearly % of earth's coastlines.

Barrier beaches and islands occur worldwide, lying offshore of nearly 13% of Earth's coastlines.
Barrier beaches and barrier islands that form from or along them, are found all around the world. In general, the barrier beaches form where the tidal range is small, and they can turn into barrier islands where stronger tidal currents maintain open, transverse gaps.

Answer carbon dioxide ice;