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  • Echinoderm - Wikipedia
    There are about 7,600 extant species of echinoderm as well as about 13,000 known extinct species [9][10] All echinoderms are marine, but they are found in habitats ranging from shallow intertidal areas to abyssal depths
  • Echinoderm | Definition, Characteristics, Species, Facts | Britannica
    Echinoderm, any of a variety of invertebrate marine animals belonging to the phylum Echinodermata, characterized by a hard, spiny covering or skin Living species include sea lilies, sea urchins, sea cucumbers, starfishes, basket stars, and sea daisies
  • Echinoderms - Definition, Examples, Characteristics, and Habitat
    Echinoderms are spiny-skinned invertebrates of the phylum Echinodermata, specifically recognized by the pentamerous body (five-pointed) symmetry in adults The phylum derives its name from the Greek words ‘ekhînos,’ meaning ‘ hedgehog,’ and ‘dérma,’ meaning skin
  • Sea Stars, Urchins, and Relatives - Smithsonian Ocean
    Together, these animals make up the Echinodermata, a word with Greek origins meaning “hedgehog skin ” Echinoderms live in every ocean, even off the coast of Antarctica Well known as coastal dwellers, they can be found at depths over three miles deep (5,000 meters)
  • 5. 5. 5: Echinoderms and Chordates - Biology LibreTexts
    Echinoderm Diversity This phylum is divided into five classes: Asteroidea (sea stars), Ophiuroidea (brittle stars), Echinoidea (sea urchins and sand dollars), Crinoidea (sea lilies or feather stars), and Holothuroidea (sea cucumbers) (Figure 5 5 5 2) Perhaps the best-known echinoderms are members of the class Asteroidea, or sea stars They come in a large variety of shapes, colors, and sizes
  • Phylum Echinodermata - Definition, Classification, Characteristics . . .
    Distributed extensively across marine habitats, Echinoderms inhabit the vast expanse from intertidal zones to the profound depths of abyssal zones With a repertoire of approximately 7,000 species, this phylum stands as the second most extensive, surpassed only by Phylum Chordata
  • Echinoderms Examples: Types Of Echinoderms From Around The World
    What Is An Echinoderm? An echinoderm is an animal belonging to the phylum Echinodermata Echinoderms are characterised by their distinctive, five-point radial symmetry, unique water vascular system, tube feet, and the ability to regenerate lost body parts
  • Phylum Echinodermata- Characteristics, classification, examples
    They are exclusively marine and are among the most common and widely distributed marine animals They occur in all seas from the intertidal zones to great depths They have an organ grade system of body organization Symmetry usually radial, nearly always pentamerous
  • Echinoderms ~ MarineBio Conservation Society
    Echinoderms are a diverse group of marine animals belonging to the phylum Echinodermata They are characterized by a unique radial symmetry and a spiny or prickly outer skin The name “echinoderm” translates to “spiny skin,” which describes their appearance
  • Echinoderms - Definition, Characteristics, Types and Examples
    Echinoderms are a diverse group of invertebrate marine animals that include starfish, sea urchins, sand dollars, sea cucumbers, and crinoids The phylum contains about 7,000 living species, making it the second-largest grouping of deuterostomes, after the chordates





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