iceberg

The ship hit an iceberg and went under.

the icebergs were melting away .

icebergs have ploughed furrows on the seabed.

The drift of the icebergs in the sea endangers the ships.

A calm, narrow channel, lined by low peaks wrapped in ultra-white glaciers, it is strewn with huge tabular icebergs and smaller bergy bits.

At its farthest end, three glaciers meet to dump their effluvia into the milky grey glacial water, launching massive igloo icebergs into the lake with thunderous splashes.