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The common brittle star, Ophiothrix fragilis, Strangford Lough, Co. Down, Northern Ireland, -22 m, 5 September 2007. The common brittle star is extremely variable in colouration, ranging from violet, purple or red to yellowish or pale grey, often spotted with red. The arms are usually white or grey with pink bands.
Ophiomastix wendtii, also known by its common name, the red ophiocoma, and formerly as Ophiocoma wendtii, is a species of brittle stars that inhabits coral reefs from Bermuda to Brazil, primarily in the Caribbean sea. These brittle stars have long, thin arms emanating from a small, disk-shaped body, and club-like spines along its arms.
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 ...
In these starfish and brittle stars, development is usually direct to the adult form, without passing through a bilateral larval stage. [59] A few sea urchins and one species of sand dollar carry their eggs in cavities, or near their anus, holding them in place with their spines. [ 60 ]
Jellyfish, starfish, sand dollars and the occasional octopus wash up on South Carolina beaches all year round. For these invertebrates, sitting exposed to the sun and air will eventually kill them.
Macrophiothrix is a genus of brittle stars. Species. Macrophiothrix albolineata (H.L. Clark, 1938) Macrophiothrix albostriata (H.L. Clark, 1928)
Crinoids are echinoderms in the phylum Echinodermata, which also includes the starfish, brittle stars, sea urchins and sea cucumbers. [5] They live in both shallow water [6] and in depths of over 9,000 metres (30,000 ft). [7] Adult crinoids are characterised by having the mouth located on the upper surface.
Pisaster ochraceus, generally known as the purple sea star, ochre sea star, or ochre starfish, is a common seastar found among the waters of the Pacific Ocean. Identified as a keystone species , P. ochraceus is considered an important indicator for the health of the intertidal zone .