Common eel  (Anguilla anguilla)

Found in the rivers of the North Atlantic, Baltic and Mediterranean Seas; it also occurs along European coasts from the Black Sea to the White Sea in Russia. Spawning takes place in the Sargasso Sea in the western Atlantic (3).

Part of the common eel's life cycle is spent in the sea, and part in freshwater rivers. It is often common on the shore (2).