Jelly Fish in East Twin Lake

[gdn443]

I got a report of jellyfish at easttwin, the freshwater "jellyfish" is not a true jellyfish as are some of its marine relatives. Freshwater "jellyfish" differ slightly from the true marine jellyfish. Craspedacusta sowerbii (kras-ped-uh-kus-tuh) is the scientific name of this freshwater "jellyfish".
One obvious difference is that unlike marine jellyfish, C. sowerbii has a structure call a velum on the ventral surface. This thin, shelf-like membranous structure extends inward from the circular edge (ring canal) of the bell. The manubrium, which ends in a mouth, extends down through a hole in the velum. The velum helps set C. sowerbii apart from the true jellyfish. However, because C. sowerbii looks like a jellyfish, we call it a jellyfish!
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[tubeN2]

That is an interesting article. I had never heard of a freshwater version of the jelly fish. Thank you for sharing that information.[cool]

Keep up the good work as well.[]
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[davetclown]

we got them in michigan as well, some kind of hitchhiker of sorts. not native but are hear and vary small so if you were swimming with them you would most likley not even know it....
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[tubeN2]

You would definitely notice the ones here in Cali. Swimmers make contact quite frequently and they are extremely painful. Some species even cause paralysis.[pirate]
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[gdn443]

I'm glad these are freindly buggers. Just struck me strange that we would have them at all. Socal must be the breeding ground for all sorts of strange fungi. [sly]
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[davetclown]

we had some coverage on our local tv news about them.

they are not native and are a fresh water veriety from japan. tho' they would not give the sorce of how they got in to lake st clair but one can asume that they arived much in the same way as the gobi. (no not by freighter dumpings japan has no fresh water ports.)
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