Littorina Sea

Littorina Sea is a geological brackish water stage of the Baltic Sea, which existed around 7500–4000 BP and followed the Mastogloia Sea, transitional stage of the Ancylus Lake. The Littorina Sea is named after common periwinkle, then a prevailing mollusc in the Baltic waters, which indicates salinity of the sea.


Littorina Sea is a geological brackish water stage of the Baltic Sea, which existed around 7500–4000 BP and followed the Mastogloia Sea, transitional stage of the Ancylus Lake. The Littorina Sea is named after common periwinkle, then a prevailing mollusc in the Baltic waters, which indicates salinity of the sea.
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