Distribution

Ophiuroids range from the poles to the tropics and from intertidal to abyssal plains as well as in deep sea trenches. The deepest recordings were taken from the Bourgainville Trench at 26,270 ft (8,006 m).

bursal slit

Brittle and basket star anatomy. (Illustration by Patricia Ferrer)

bursal slit oral arm shield ventral ossicle vertebral ossicle radial canal perihemal canal

•radial nerve "tube foot

Brittle and basket star anatomy. (Illustration by Patricia Ferrer)

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