Sand, granules, and small pebbles have been observed floating in loose aggregates or patches in the Arctic Ocean near Barrow, Alaska. The causes appear to be the collapse of ice-push ridges of sand and gravel on the beaches, the dumping of material on to calm water, and normal surface tension. Water temperature, particle shape and force of particle-water impact are also pertinent factors. A possible nonwetting compound on the particles was not found.

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