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Plate of brittle stars from the Kunstformen der Natur from Ernst Haeckel (1904) Second plate of brittle stars from Haeckel. Between 2,064 [11] and 2,122 species of brittle stars are currently known, but the total number of modern species may be over 3,000. [12] This makes brittle stars the most abundant group of current echinoderms (before sea ...
Ophionereis diabloensis is a species of brittle star. [ 1 ] [ 2 ] Native to the waters of Southern California and Baja California, the type species was collected at Diablo Cove, [ 3 ] near Avila Beach in San Luis Obispo County .
The arms are simple and unbranched, projecting from and well-fused to the edge of the disc. These arms move horizontally. The arm spines short and movable. They lie flat against the arms when stimulated, but held erect when the brittle star is at rest. Disc and arms are covered in naked, distinct scales.
This brittle star has a circum-boreal distribution. In the northern Atlantic Ocean it is common around Iceland, Spitzbergen and Norway southwards to the North Sea.On the eastern coast of North America its range extends from Greenland southwards to Long Island, and in the Pacific Ocean, its range stretches from Japan and the Bering Sea southwards to California. [3]
Ophiothrix is a large genus of brittle stars (Ophiuroidea) found in oceans worldwide from tropics to Arctic and Antarctic regions. At present a total of 93 Ophiothrix species have been recognized. It is considered as one of the most interesting genera because of the presence of its brilliant colors and associations with coral and sponges as well.
The banded brittle star utilizes different methods of feeding depending on the size of a given food particle; if the particle is relatively large, the brittle star grasps it with the tip of its arm and coils its arm to bring it to the mouth, whereas if the particle is relatively small it uses its elongate tube feet to transport food to its mouth.
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]
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.