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DescriptionA small sea cucumber with white skin and tube-feet in 5 zigzag rows. There are 10 sparsely branched white tentacles. The spicules are numerous and each one is knobbly with 4 holes. There is a superficial layer of smaller star-shaped cup spicules. Usually only 1cm long, occasionally up to 4 cm. Has been confused with the small form of Ocnus planci in the past.