Brittle Stars, like these Ophiura ophiura (Linnaeus), occasionally wash up in large numbers on the rocky shoreline of the island of Burry Holms at Rhossili Bay on the Gower Peninsula. They are strange and delicate forms of Echinoderm and are related to the starfish and sea urchin. The five fragile flexible arms arranged around the central disc have limited mobility. The articulation of the arms is limited to lateral movements rather than up and down. They can move quite quickly over sandy or rocky surfaces by sinuous sideways movements – as captured in the photographs of this slideshow.
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