ctenophore

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Related to Comb jellies: Sea walnuts

ctenophore

any marine invertebrate of the phylum Ctenophora, including the sea gooseberries, that moves by means of comb rows of cilia. They are sometimes classified with the COELENTERATES but more usually given the status of a phylum.
References in periodicals archive ?
"To make a long story short, we were able to reconstruct the whole [early] lineage of comb jellies," by doing anatomical comparisons, Vinther said, adding that along with the similarities with comb jellies, the discovery of the ancient sea monster was a big deal as it may have been among the first animals to evolve on Earth.
It is believed by some that some of the ancestors of comb jellies had skeletons and that their tentacles involved into the hairy 'combs' seen today, the report says.
In a test run off the coast of Florida this spring, The Associated Press documented how his team is studying which genes switch on and off as iridescent comb jellies regenerate from injury.
Comb jellies also possess a simple form of nervous system, called a nerve net, and their genome contains many of the genes involved in the nervous system.
There were about 400 comb jellies per cubic meter (that's like 200 golf ball--sized jellies in a space as big as a bathtub).
Scientists thought that comb jellies emerged after this point because they possess both a nervous system (complete with a rudimentary brain) and muscles.
Comb jellies, the ctenophores, are life forms that resemble jellyfish.
Previously, it was thought that either super simple-structured or comb jellies were at the root of the non-bilaterian animal tree.
Peroxide at 3 ppm was three times more efficient at disinfection than 1 ppm for plankton and approximately twice as effective for the comb jellies. When 10 ppm peroxide was used with mixed plankton, the mortality times decreased again, this time at twice the rate.
A similar question echoes through freelance writer Amy Maxmen's piece on comb jellies and animal evolution--another we might have skipped if we had gone to the counter method.
"Comb jellies are more alien than any aliens people imagine," he says.