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Jellyfish watch

Jellyfish

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Jellyfish weekly report

16.5.2012 The invasive ctenophore Mnemiopsis concentration photographed at the Orot Rabin power station, 16 May, 2012. Photograph by G. Pasternak.

		Jellyfish watch poster 2011

Dr. Bella Galil, Israel Oceanographic & Limnological Research

The oldest fossils of Jellyfish are over 500 million years old and are quite similar to their present day descendants. Jellyfish maybe among the most ancient organisms on the planet, but are unpopular with the Israeli public, and have never received a flattering media coverage.
Jellyfish are found in all oceans, from the littoral to the greatest depth. They range in size from thimble size to giants, like Cyanea arctica , which umbrella is 2 meter across and its arms stretch 30 m (not to worry, that creature does not live in the Mediterranean).
Along the Mediterranean coast of Israel are known four native species and four alien species that have established reproducing populations: Rhopilema nomadica, Cassiopea andormeda, Phyllorizhia punctata and Marivagia stellata

Why do jellyfish sting?

In case of sting please call 101  

Rhopilema nomadica Galil

Rhopilema nomadica jellyfish caught by fishermen in Haifa Bay