Erennidae

	Erennidae Erennidae is a family of cnidarians belonging to the order Siphonophorae. Genera: * ''Erenna ''Erenna'' is a genus of cnidarians belonging to the family Erennidae. The species of this genus are found in Europe and Northern America and Southeast Asia. Species: ''Erenna cornuta'' ''Erenna insidiator'' ''Erenna laciniata'' ''Erenna ...'' Bedot, 1904 * '' Parerenna'' Pugh, 2001 References Physonectae Cnidarian families {{Siphonophorae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Erennidae Erennidae is a family of cnidarians belonging to the order Siphonophorae. Genera: * ''Erenna ''Erenna'' is a genus of cnidarians belonging to the family Erennidae. The species of this genus are found in Europe and Northern America and Southeast Asia. Species: ''Erenna cornuta'' ''Erenna insidiator'' ''Erenna laciniata'' ''Erenna ...'' Bedot, 1904 * '' Parerenna'' Pugh, 2001 References Physonectae Cnidarian families {{Siphonophorae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Erenna ''Erenna'' is a genus of cnidarians belonging to the family Erennidae. The species of this genus are found in Europe and Northern America and Southeast Asia. Species: ''Erenna cornuta'' ''Erenna insidiator'' ''Erenna laciniata'' ''Erenna richardi'' ''Erenna sirena ''Erenna'' is a genus of cnidarians belonging to the family Erennidae. The species of this genus are found in Europe and Northern America and Southeast Asia. Species: ''Erenna cornuta'' ''Erenna insidiator'' ''Erenna laciniata'' ''Erenn ...'' References Erennidae Hydrozoan genera {{Siphonophorae-stub ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
picture info	Siphonophorae Siphonophorae (from Greek ''siphōn'' 'tube' + ''pherein'' 'to bear') is an order within Hydrozoa, which is a class of marine organisms within the phylum Cnidaria. According to the World Register of Marine Species, the order contains 175 species thus far. Although a siphonophore may appear to be an individual organism, each specimen is in fact a colonial organism composed of medusoid and polypoid zooids that are morphologically and functionally specialized. Zooids are multicellular units that develop from a single fertilized egg and combine to create functional colonies able to reproduce, digest, float, maintain body positioning, and use jet propulsion to move. Most colonies are long, thin, transparent floaters living in the pelagic zone. Like other hydrozoans, some siphonophores emit light to attract and attack prey. While many sea animals produce blue and green bioluminescence, a siphonophore in the genus ''Erenna'' was only the second life form found to produce a red li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Physonectae Physonectae is a suborder of siphonophores. In Japanese it is called (). Organisms in the suborder Physonectae follow the classic Siphonophore body plan. They are almost all pelagic, and are composed of a colony of specialized zooids that originate from the same fertilized egg. While Physonectae are not generally well-known by the public, a related species also of the order Siphonophorae is the Portuguese man o' war, well-known for its painful sting. Distribution The majority of physonect siphonophores are pelagic, with the exception of Rhodallidae, which are a family of benthic physonects first collected during the ''Challenger'' expedition and described by Ernst Haekel in his ''Challenger'' monograph. Physonects, and siphonophores in general, are known to be widely distributed globally, but are understudied. Few individuals have been collected and are often misidentified. As a result, their exact global distributions are unclear. Morphology All physonect siphonophor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Cnidarians Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick. Cnidarians mostly have two basic body forms: swimming medusae and sessile polyps, both of which are radially symmetrical with mouths surrounded by tentacles that bear cnidocytes. Both forms have a single orifice and body cavity that are used for digestion and respiration. Many cnidarian species produce colonies that are single organisms composed of medusa-like or polyp-like zooids, or both (hence they are trimorphic). Cnidarians' activities are coordinated by a decentralized nerve net and simple receptors. Several free-swimming species of Cubozoa and Scyphozo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]