Family Sigalionidae "scale worm"
Distribution: Pulau Semakau, Sungei Punggol
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The Sigalionids are burrowing predators living in sand or mud. A few species inhabit tubes. Others have spinning glands and produce numerous tough fibers incorporated into the tubes. They are common in soft-bottoms. Being long-bodied and their scales being closely appended to the bodies, they appear rather pentagonal.
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