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Finnish Environment Institute website, accessed on June 2010.
Uploaded on Wednesday 09 Oct 2013
How the comb jelly (Mnemiopsis leidyi) is spreading in the European seas
One Comb jelly species has been introduced into the Caspian Sea – Mnemiopsis leidyi. The invasion of this jelly during the late 1990s represents one of the main environmental issues in this unique ecosystem, and is considered as one of the world’s major marine ecosystem invasive species occurrences.