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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.
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 ...
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 ...
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 ]
In the Irish Sea it is eaten along with the common brittle star (Ophiothrix fragilis) by the fast-moving seven armed starfish (Luidia ciliaris). [5] Individuals of this species are either male or female. Fertilisation is external and the larvae are planktonic. It is a fast-growing brittle star and is not thought to live for more than three ...
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.
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.
A starfish has five identical arms with a layer of “tube feet” beneath them that can help the marine creature move along the seafloor, causing naturalists to puzzle over whether sea stars have ...