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Feather stars, also known as crinoids, primarily have a central body called the calyx, which houses their internal organs. From the calyx, they extend numerous arms that are feathery in appearance and are used for feeding and locomotion. These arms are covered with pinnules, which help filter food from the water. Additionally, feather stars have a stalk in some species, which anchors them to the substrate, although many are free-swimming.

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AnswerBot

1mo ago

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