May 27, 2025 · Cnidarian, any member of the phylum Cnidaria (Coelenterata), a group of more than 9,000 species of mostly marine animals. The group includes corals, hydras, jellyfish, …

May 27, 2025 · Cnidarian - Symbiosis, Adaptations, Predators: Cnidarians are used for food, building material, and jewelry. Extracts from many cnidarians have medicinal properties. All …

The phylum Cnidaria is made up of more than 9,000 living species, mostly marine animals. Corals, jellyfish, sea anemones, and sea fans are all cnidarians.

May 23, 2025 · Jellyfish, any planktonic marine member of the class Scyphozoa (phylum Cnidaria), a group of invertebrate animals composed of about 200 described species, or of the …

Apr 12, 2025 · Hydra, genus of invertebrate freshwater animals of the class Hydrozoa (phylum Cnidaria). The body of such an organism consists of a thin, usually translucent tube that …

In jellyfish …marine member of the class Scyphozoa (phylum Cnidaria), a group of invertebrate animals composed of about 200 described species, or of the class Cubozoa (approximately 20 …

cnidarian, any member of the phylum Cnidaria (Coelenterata), a group made up of more than 9,000 living species. Mostly marine animals, the cnidarians include the corals, hydras, jellyfish, …

Hydroid, any member of the invertebrate class Hydrozoa (phylum Cnidaria). Most hydroids inhabit marine environments, but some hydroids have invaded freshwater habitats. Hydroids may be …

sea pen, any of the 300 species of the order Pennatulacea, colonial invertebrate marine animals of the class Anthozoa (phylum Cnidaria). The name sea pen derives from their resemblance to …

May 27, 2025 · Cnidarian - Polyp, Medusa, Tentacles: Cnidarians have two cell layers, ectoderm and endoderm (gastrodermis), with the mesoglea between them. Medusae have a more highly …