- Cnidaria is a phylum of mostly marine aquatic invertebrates12that have specialized stinging cells (cnidocytes) on their tentacles2. Cnidaria is also known as Coelenterata12. Some examples of cnidarians are jellyfish, corals, sea anemones, and hydra.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Cnidaria [ nahy- dair-ee- uh ] show ipa noun Zoology. an alternative name for the invertebrate phylum Coelenterata, giving emphasis to the stinging structures as characteristic of the phylum.www.dictionary.com/browse/cnidariacnidarian, or coelenterate, Any of about 9,000 species of mostly marine aquatic invertebrates, constituting the phylum Cnidaria (or Coelenterata), that are unique in possessing specialized stinging cells (cnidocytes) borne on the tentacles.www.britannica.com/summary/cnidarian
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Cnidaria - Wikipedia
Cnidaria is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in fresh water and marine environments (predominantly the latter), including jellyfish, hydroids, sea anemones, corals and some of the smallest marine parasites. Their distinguishing … See more
The term cnidaria derives from the Ancient Greek word knídē (κνίδη “nettle”), signifying the coiled thread reminiscent of cnidocytes. The word was first coined in 1766 by the Swedish … See more
Sexual
Cnidarian sexual reproduction often involves a complex life cycle with both polyp and medusa stages. For example, in Scyphozoa (jellyfish) … See moreMany cnidarians are limited to shallow waters because they depend on endosymbiotic algae for much of their nutrients. The life … See more
Cnidarians form a phylum of animals that are more complex than sponges, about as complex as ctenophores (comb jellies), and less complex than bilaterians, which include almost all … See more
Basic body forms
Most adult cnidarians appear as either free-swimming medusae or sessile polyps, and many hydrozoans species are known to alternate … See moreCnidarians were for a long time grouped with Ctenophores in the phylum Coelenterata, but increasing awareness of their differences caused them to be placed in separate phyla. … See more
Fossil record
The earliest widely accepted animal fossils are rather modern-looking cnidarians, possibly from around 580 million years ago, although fossils from the Doushantuo Formation can only be dated approximately. The … See moreWikipedia text under CC-BY-SA license Neteldieren - Wikipedia
Cnidarian | Definition, Life Cycle, Classes, & Facts | Britannica
Cnidarians Facts: Corals, Jellyfish, and Sea Anemones - ThoughtCo
ADW: Cnidaria: INFORMATION
WebCnidaria. corals, sea anemones, jellyfish, and relatives. Facebook. Twitter. By Phil Myers. The Phylum Cnidaria includes such diverse forms as jellyfish, hydra, sea anemones, and corals. Cnidarians are radially or …
Anatomy of cnidarians | Britannica
Webcnidarian , or coelenterate , Any of about 9,000 species of mostly marine aquatic invertebrates, constituting the phylum Cnidaria (or Coelenterata), that are unique in possessing specialized stinging cells (cnidocytes) …
Cnidarians Portal | Britannica
Introduction to Cnidaria - University of California …
WebIntroduction to Cnidaria Jellyfish, corals, and other stingers: Cnidarians are incredibly diverse in form, as evidenced by colonial siphonophores, massive medusae and corals, feathery hydroids, and box jellies with complex …
Cnidaria - New World Encyclopedia
WebCnidaria (pronounced with a silent c) is a phylum containing some 11,000 species of relatively simple invertebrate animals found exclusively in aquatic, mostly marine, environments. Cniderians include corals , sea …
5.8.3: Phylum Cnidaria - Biology LibreTexts