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Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea (⫽ ˌ æ s t ə ˈ r ɔɪ d i ə ⫽). Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as asteroids due to being in the class
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Learn about the starfish, also known as sea star, an echinoderm with no brain but amazing abilities to regenerate and feed. See stunning images of different species and habitats of these marine animals.
2 juil. 2024 · Learn about sea stars, marine invertebrates with rays or arms and a central disk. Find out how they feed, reproduce, and belong to three orders with different features and habitats.
16 juin 2024 · Sea stars, also known as starfish, are not fish but echinoderms with five-point radial symmetry. Learn about their anatomy, behavior, diversity, and conservation from NOAA.
7 févr. 2006 · Starfish, or sea star, is a common marine animal found from seashore to ocean depths; 1600 species are known worldwide. They belong to the invertebrate phylum echinodermata. Starfish are usually radially symmetrical, often with 5 radiating arms joined to a central disc.
23 sept. 2023 · Starfish, part of the Phylum Echinodermata and Class Asteroidea, are broadly divided into two subclasses: Asterozoa and Ophiuroidea. They are diverse creatures, with about 1,500 to 2,000 species spread across nearly 36 families. These species vary in size, color, and number of arms.
