Fantastic natural phenomenon on the Baltic coast in Northern Poland. These ice balls are created when ice slush is formed on the surface of the water and is pushed together by the motion of the waves. The ice than floats around on the surface being polished by the water and eventually gets thrown onto the beach. Nature is the best artist of all.
Red tide is a common name for a phenomenon more correctly known as an algal bloom (large concentrations of microorganisms), an event in which estuarine, marine, or fresh water algae accumulate rapidly in the water column and results in discoloration of the surface water.