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Brittle stars, serpent stars, or ophiuroids (from Latin ophiurus 'brittle star'; from Ancient Greek ὄφις (óphis) 'serpent' and οὐρά (ourá) 'tail'; referring to the serpent-like arms of the brittle star) are echinoderms in the class Ophiuroidea, closely related to starfish. They crawl across the sea floor using their flexible arms ...
It is somewhat variable in appearance and difficult to distinguish from other species of brittle star occurring in the same localities. The colour also varies, but populations in Florida are often reddish-orange, with a longitudinal white line along the upper surface of the arms. This brittle star grows to a disc diameter of about 10 mm (0.4 in).
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
Ophiothrix suensoni, Suenson's brittle star or the sponge brittle star, is a species of marine invertebrate in the order Ophiurida. It is found in the Caribbean Sea and Gulf of Mexico. It is included in the subgenus Acanthophiothrix making its full scientific name Ophiothrix (Acanthophiothrix) suensoni. [1]
Ophiothrix spiculata, the western spiny brittle star, is a species of marine invertebrate in the order Ophiurida. It is found along the Pacific coast of North and South America from below the San Francisco Bay to Peru . [ 1 ]
Map of the Southern African coastline showing some of the landmarks referred to in species range statements. The list of echinoderms of South Africa is a list of species that form a part of the echinoderm (Phylum Echinodermata) fauna of South Africa, and includes the starfish, feather stars, brittle stars, sea urchins and sea cucumbers.
Evasterias troschelii (orange variant) The mottled star is a large starfish with a radius of up to 28 centimetres (11 in). It has a small disc and five long narrow arms often turned up at the tip. The widest point of the arms is a little distance away from the edge of the disc.
Ophiura ophiura is an active brittle star, moving with a jerky swimming action of its legs and sometimes burrowing. [2] It is a filter feeder, feeding on a wide range of food, [1] but also a bottom-feeding carnivore and detritivore. [7] It can regenerate its arms if they are damaged or torn off. [7] Sexual reproduction takes place during the ...