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sea nettle
(redirected from sea nettles)

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sea nettle, any one of several species of stinging jellyfish, common along coasts and much feared by swimmers. Most stings are painful but are not dangerous to man; however, certain jellyfish of the order Cubomedusae and especially an Australian species, Chironex fleckeri, have caused many deaths. The sting, produced by nematocysts located in the tentacles, is used to kill or stun prey. Sea nettles are classified in the phylum Cnidaria Cnidaria or Coelenterata , phylum of invertebrate animals comprising the sea anemones, corals, jellyfish, and hydroids. Cnidarians are radially symmetrical (see symmetry, biological).
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, class Scyphoza.


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But from May through August, buds the size of a BB break off the polyps and rapidly grow into sea nettles that can reach the size of a dinner plate.
One of the most popular can be found in the Outer Bay room, where luminescent jellyfish and sea nettles move languorously through the water, using a method of propulsion that can best be described as the opening and closing of an umbrella without stays.
The Stanford researchers borrowed sea nettles from the Monterey Bay Aquarium to do the testing on volunteers in a research clinic at Stanford Hospital.
 
 
 
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