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小知识
红棘海星Protoreaster lincki,分布于印度洋热带浅海。体形较大,直径可达30厘米。体表的红色棘状突起有防御作用。以珊瑚、海绵、蛤蜊等小动物为食。捕食时,胃翻出包裹猎物;分泌消化液消化猎物后,再收回体内。
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红棘海星 / Adrian Pingstone, Public domain
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红棘海星/ André ALLIOT, Public domain
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