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  • 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
  • Echinoderm - Wikipedia
    An echinoderm ( ɪ ˈ k aɪ n ə ˌ d ɜːr m, ˈ ɛ k ə- ) [2] is any animal of the phylum Echinodermata ( ɪ ˌ k aɪ n oʊ ˈ d ɜːr m ə t ə ), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies" [3]
  • All About Echinoderms - Ocean Conservancy
    Echinoderms constitute a unique group of animals that have me believing in the magic of our ocean For a family of slow-moving creatures with no brains or bones, you’d expect echinoderms to really struggle for survival But while there are several threats facing echinoderms, some species have been around for more than 500 million years
  • 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
  • About Echinoderms | Assembling the Echinoderm Tree of Life
    Echinoderms are an exclusively marine group of animals with a rich evolutionary history extending back more than 540 million years Whereas five major groups of echinoderms are living today (starfish, brittle stars, sea urchins, sea cucumbers, and sea lilies), more than 20 other, equally distinctive extinct echinoderms groups lived during the past
  • Echinoderms - Definition, Characteristics, Types and Examples - AnimalWised
    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
  • Sea Stars, Urchins, and Relatives - Smithsonian Ocean
    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) Some are stealthy predators, pursuing prey with speed and agility, while others feed on drifting detritus while stuck in place, more similar to a billowing field of ferns
  • 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
  • Phylum Echinodermata- Characteristics, classification, examples
    Echinoderms are enterocoelous coelomates with pentamerous radial symmetry, without distinct head or brain having a calcareous endoskeleton of separate plates or pieces and a peculiar water vascular system of coelomic origin with podia or tube-feet projecting out of the body
  • Phylum Echinodermata | Biology for Majors II - Lumen Learning
    Echinodermata are so named owing to their spiny skin (from the Greek “echinos” meaning “spiny” and “dermos” meaning “skin”), and this phylum is a collection of about 7,000 described living species Echinodermata are exclusively marine organisms





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