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 …
Echinoderm | Definition, Characteristics, Species, & Facts | Britannica
2024年11月14日 · 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 …
Echinoderm - Definition, Characteristics & Examples - Biology …
2019年10月4日 · An echinoderm is a member of the phylum Echinodermata which contains a number of marine organisms recognized by their pentamerous radial symmetry, calcareous …
Echinoderms - Definition, Examples, Characteristics, and Habitat
2024年5月6日 · Echinoderms are spiny-skinned invertebrates of the phylum Echinodermata, specifically recognized by the pentamerous body (five-pointed) symmetry in adults. The …
Species and distribution of echinoderms | Britannica
Echinoderms are found in all the oceans, from the intertidal zone to the deepest oceanic trenches. Most species have numerous tube feet that are modified for locomotion, respiration, tunneling, …
Echinoderms - Definition, Characteristics, Types and Examples
2023年3月2日 · Echinoderms are a diverse group of invertebrate marine animals that include starfish, sea urchins, sand dollars, sea cucumbers, and crinoids. The phylum contains about …
All About Echinoderms - Ocean Conservancy
2024年4月3日 · 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 …
Echinoderms Examples: Types Of Echinoderms From Around The …
2024年2月6日 · What Is An Echinoderm? An echinoderm is an animal belonging to the phylum Echinodermata. Echinoderms are characterised by their distinctive, five-point radial symmetry, …
Sea Stars, Urchins, and Relatives - Smithsonian Ocean
Sea buds (blastoids), a type of echinoderm similar to sea lilies and feather stars, had long stalks that tethered them to the ground, but where sea lilies and feather stars have long feathery …
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 …