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about 5 feet
The answer is "floe."flow in all direcions
A floe is a flat mass of ice which floats on the sea. Here's a sentence: "The polar bear rested on the ice floe while watching for seals."
A floe (ice floe) is the term we often apply to a mass or small field of floating ice.
berg, floe, glacial mass, ice field, ice floe, iceberg, icecap, snow slide