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  • Echinoderm - Wikipedia
    While bilaterally symmetrical as larvae, as adults echinoderms are recognisable by their usually five-pointed radial symmetry (pentamerous symmetry), and are found on the sea bed at every ocean depth from the intertidal zone to the abyssal zone
  • 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 1 The phylum derives its name from the Greek words ‘ekhînos,’ meaning ‘ hedgehog,’ and ‘dérma,’ meaning skin
  • About Echinoderms | Assembling the Echinoderm Tree of Life
    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
  • Phylum Echinodermata | manoa. hawaii. edu ExploringOurFluidEarth
    Echinoderms are named for the spines or bumps covering the outer surface of the bodies of many of them (Greek root word echino - meaning spiny; Latin root word - derm meaning skin) Examples of echinoderms include sea stars, sea urchins, sea cucumbers, brittle stars, and feather stars (Fig 3 83)
  • 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: The Spiny-Skinned Architects of the Ocean
    Echinoderms are some of the ocean’s most extraordinary creatures — from sea stars and urchins to sea cucumbers Discover how these spiny-skinned animals move without blood, breathe in surprising ways, and even regenerate lost limbs
  • Fossil Echinoderms – Crinoids, Blastoids, and Others
    Echinoderms—“spiny skinned” invertebrates (from the ancient Greek words for “hedgehog” and “skin”)—are known for their five-sided radial symmetry These marine animals have an internal hydraulic system called a water vascular system that is used for nutrient distribution, respiration, and movement
  • 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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