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en.wikipedia.org/wiki/Cnidaria

Cnidaria is a phylum containing over 10,000 species of animals found exclusively in aquatic ... Some, however, omit either the polyp or the medusa stage. .... polyp and medusa forms, or of zooids within colonial organisms like those in Hydrozoa. ..... organism, and they are now firmly identified as heavily derived cnidarians, ...

en.wikipedia.org/wiki/Polyp

A polyp in zoology is one of two forms found in the phylum Cnidaria, the other being the medusa. ... individual is always a polyp; in the class Hydrozoa, however, the individual may be either a polyp or a medusa, .... Coral Reef Alliance Coral Polyps · are-corals The International Coral Reef Initiative (ICRI) What are corals?

www.answers.com/Q/Identify_the_organisms_that_exist_as_either_a_medusa_or_polyp_form

They use stinging cells, the stinging cells use there sharp spines and when the stinging cell touches prey the thread like structure explodes out of the cell and ...

www.encyclopedia.com/plants-and-animals/animals/zoology-invertebrates/polyp-and-medusa

polyp and medusa, names for the two body forms, one nonmotile and one typically ... In such organisms the polyp, by budding, gives rise to medusae, which either ... the polyp exists, as in the hydra and the sea anemone, the organism has the ...

www.oceaninn.com/en-us/wildlife/cnidarians.htm

The nematocyst is fired either by the tentacle touching prey, or in some cases by a nerve ... In the Medusoid form, the organism is essentially upside-down, with the ... sessile polyp phase and a free-swimming medusa stage, though the medusa ... having identified the lion's mane jellyfish as the villain in The Adventures of the ...

ocean.si.edu/jellyfish-and-comb-jellies

Jellyfish and comb jellies are gelatinous animals that drift through the ... the jelly's body into special sheaths or pouches on either side of their mouths. .... Throughout their lifecycle, jellyfish take on two different body forms: medusa and polyps.

www.shmoop.com/animal-evolution-diversity/polyps-medusas.html

... two basic body styles that are defined by our symmetry, either radial or bilateral . ... Eumetazoa have simple muscles and nerves that enable animals to move. ... Many cnidarians alternate between polyp and medusa forms during their life. ... like a medusa, but is actually bunch of polyps, so integrated that they can't exist ...

www.britannica.com/animal/cnidarian

Mostly marine animals, the cnidarians include the corals, hydras, jellyfish, ... What are you looking for? ... Cnidarians have two body forms—polyp and medusa— which often occur .... Throughout the tropics where reefs are accessible, coral skeletons are used as building material, either in blocks or slaked to create cement.

www.earthlife.net/inverts/cnidaria.html

4)Two different forms exist, medusa and polyp ... The Cnidaria (pronounced nidaria)as a group of animals are well known to many people under ... The Cnidocyst has either a modified flagellum called a Cnidocil, or a cone as a sensory trigger.