New record of Rangia cuneata (Mollusca: Bivalvia: Mactridae) on southern coast of Baltic Sea (N Poland)

In February 2021 a valve of Rangia cuneata – a clam native to North America, was found in a new location on the Polish coast in Ustka Bay. After first records of this clam in Europe in 2005 in Belgium and then in 2010 in the Baltic Sea (Russian part of the Vistula Lagoon), an increasing number of new observations have been reported since. This indicates an effective dispersal of this alien species in the Baltic waters.