congenitaldisease:In 2014, a number of ice balls appeared on the beach in Puck Bay, Poland. This b
congenitaldisease: In 2014, a number of ice balls appeared on the beach in Puck Bay, Poland. This bizarre and extremely rare phenomenon is caused by strong winds and waves changing their direction. The same phenomenon took place in Lake Michigan and a number of other areas in the US following the extreme polar vortex gripping some states. -- source link