Frozen Sea

This video of the frozen Baltic Sea was shot around Rzucewo, Poland last January.  I don't know what depth it was frozen... just that it felt solid.  The ice was cracked and re-frozen in a number of places and there was a small layer of snow on top, 15 centimeters or less.  There was evidence that someone had ridden at least one ATV vehicle on the ice in the last few weeks.  The temperature in thes video is around -15C and, with windchill, felt like about -22C.  Because the Baltic's salinity levels are quite low it is easier for it to freeze than other seas or oceans but still takes colder and more sustained cold temperatures fo it to freeze than bodies of fresh water. 
camera man: Murray Henson.
Thanks for sharing Murray.