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- Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.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.www.britannica.com/animal/echinodermEchinoderms are a successful phylum of marine animals. They include sea stars, brittle stars, sea urchins, sea cucumbers and their relatives.simple.wikipedia.org/wiki/Echinoderm
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An echinoderm is any deuterostomal animal of the phylum Echinodermata (/ɪˌkaɪnoʊˈdɜːrmətə/), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies". While bilaterally symmetrical as larvae, as adults echinoderms are recognisable … See more
The name echinoderm is from Ancient Greek ἐχῖνος (ekhînos) 'hedgehog', and δέρμα (dérma) 'skin'. Echinoderms are bilaterians, meaning that their … See more
Many echinoderms have great powers of regeneration. Many species routinely autotomize and regenerate arms and viscera. Sea cucumbers often discharge parts of their internal organs if they perceive themselves to be threatened, regenerating them … See more
Sexual reproduction
Echinoderms become sexually mature after approximately two to three years, depending on the … See moreLocomotion
Echinoderms primarily use their tube feet to move about, though some sea urchins also use their spines. The tube feet typically have a tip … See moreEchinoderms evolved from animals with bilateral symmetry. Although adult echinoderms possess pentaradial symmetry, their larvae are ciliated, free-swimming … See more
Echinoderms are numerous invertebrates whose adults play an important role in benthic ecosystems, while the larvae are a major component of the plankton. Among the ecological roles of adults are the grazing of sea urchins, the sediment processing of heart … See more
Wikipedia text under CC-BY-SA license About Echinoderms | Assembling the Echinoderm Tree of Life
Echinoderms ~ MarineBio Conservation Society
The Echinoid Directory - Natural History Museum
Echinoderm - Wikiwand
Origin and Early Evolution of Echinoderms | Annual Reviews
Echinoderm - Evolution, Adaptations, Paleontology | Britannica
Echinoderm Facts and Information - ThoughtCo
All About Echinoderms - Ocean Conservancy
Exclusively Fossil Taxa - Digital Atlas of Ancient Life
Crinoidea - Simple English Wikipedia, the free encyclopedia
Echinoderm - Wikipedia
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