Cnidaria

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Cnidaria

 [ni-dar´e-ah]
a phylum of marine invertebrates that includes sea anemones, hydras, jellyfish, and corals. See also coelenterata.

Cnidaria

/Cni·da·ria/ (ni-dar´e-ah) a phylum of marine invertebrates including sea anemones, hydras, corals, jellyfish, and comb jellies, characterized by a radially symmetric body bearing tentacles around the mouth.

Cnidaria

a phylum of invertebrate animals that includes jellyfish, sea anemones, hydroids, and corals. Formerly called Coelenterata.

Cnidaria

a subphylum of the phylum Coelenterata in some classifications, where the Ctenophora (sea gooseberries) form the other subphylum (see COELENTERATE). However, in more modern classifications the Ctenophora are given the status of a phylum, so that the organisms classified in the Cnidaria (hydroids, jellyfishes, sea anemones and corals) are the only organisms in the new phylum Coelenterata, thus making the term Cnidaria obsolete.

Cnidaria

a phylum of lowly animals including hydroids and hydromedusae (class Hydrozoa), true jellyfish and free-swimming medusae (class Scyphozoa) and sea anemones, sea pens and corals (class Anthozoa). Previously called Coelenterata and that name is still widely used.
References in periodicals archive ?
Relative contributions of various cellular mechanisms to loss of algae during cnidarian bleaching.
These fossils have also been assigned by some workers to a group of modern cnidarians (the "sea pens") or to ctenophores.
Mollusks make up the same percent of marine life as fish and cnidarians combined.
Fission and the dynamics of genets and ramets in colonial cnidarian populations.
Lindquist, personal observation) and benthic cnidarians (N.
In recent years, high densities of gelatinous cnidarians have been also registered in the Patagonian Fjord Ecosystems of southern Chile, sometimes having a negative impact on aquaculture activities, particularly salmon farming (Palma et al, 2007a; Mianzan et al, 2014).
This family also includes well-known creatures such as jellyfish and corals, which, like other cnidarians, have the simple design of a mouth surrounded by tentacles.
Chapters on Simple Animals, Cnidarians, Flatworms and Roundworms, Segmented Worms, Mollusks, Arachnids, Crustaceans, Centipedes and Millipedes, Insects, Echinoderms, Chordates, Cartilaginous Fish, Bony Fish, Amphibians, Reptiles, Birds and Mammals are included, along with a Glossary and index.
Organisms Found in Ship Ballast Phylum Number of organisms Annelids (segmented worms, leeches) 43 Cnidarians (jellyfish, hydra) 25 Diatoms (green algae) 128 Crustaceans (lobsters, shrimp, krill) 72 Fish (cod, catfish) 2 Mollusks (squid, mussels) 19 SOURCE: CARTON & GELLER, ECOLOGICAL ROULETTE: THE GLOBAL TRANSPORT OF NONINDIGENOUS MARINE ORGANISMS, SCIENCE, 1993, V.
Helicoradomenia species, however, do not feed on cnidarians, as telltale nematocysts are lacking in their guts.
These include such simple animals as sponges and cnidarians, as well as probable very primitive representatives of other phyla.