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Asterinidae
The Asterinidae are a large family of sea stars in the order Valvatida. == Description and characteristics == These are generally small sea stars, flattened dorsally and bearing very short arms, often giving a pentagonale shape in the body (except in some species possessing more than 5 arms). The periphery of the body is thin and formed by indistinct, tiny marginal plates. They are characterized by their aborale face formed by plates shaped like crescents, sometimes giving a "knitted" appearance to the skin. The abyssal species can be bigger, like those of the genus ''Anseropoda'', which can exceed 45 cm in diameter.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Asterinidae」の詳細全文を読む
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