Clupea Clupea Clupea is genus of planktivorous bony fish belonging to the family Clupeidae, commonly known as herrings. They are found in the shallow, temperate waters of the North Pacific and the North Atlantic oceans, including the Baltic Sea. Three species of "Clupea" are recognized. The main taxa, the Atlantic herring ("Clupea harengus") and the Pacific herring ("Clupea pallasii") may each be divided into subspecies. Herrings are forage fish moving in vast schools, coming in spring to the shores of Europe and America, where they form important commercial fisheries. The species of "Clupea" belong to the larger family Clupeidae (herrings, shads,
Ports of the Baltic Sea Ports of the Baltic Sea There are over 200 ports in the Baltic Sea. When only those ports that handle a minimum of 50,000 tonnes of cargo annually, and where at least part of this cargo is international are taken into account, the number of ports reaches approximately 190. In 2008, the total amount of cargo handled in the Baltic Sea ports amounted to 822.4 million tonnes, which was 0.4 per cent less than in 2007. Primorsk, Saint Petersburg and Muuga were the biggest ports in the Baltic Sea in 2008. Together the three top ports handled over one fifth