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Comb jelly (Mnemiopsis leidyi) is spreading in the European seas

Comb jelly (Mnemiopsis leidyi) is spreading in the European seas

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Uploaded 01 Mar 2012 by GRID-Arendal
Year: 2012 Author: Philippe Rekacewicz (le Monde Diplomatique)
Description:
North American comb jelly (Mnemiopsis leidyi) was brought accidentally to the Caspian in the ballast water of oil tankers. A voracious feeder on zooplankton and fish larvae, it first arrived in the Black Sea in the early 1980s where it changed the whole ecosystem and contributed to the collapse of more than two dozen major fishing grounds. From there the comb jelly also invaded the Azov, Marmara and Aegean Seas and most recently the Caspian.
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