Crown-of-thorns starfish

Crown-of-thorns starfish

The crown-of-thorns sea star, Acanthaster planci, is a large, multiple-armed starfish (or seastar) that usually preys upon hard, or stony, coral polyps (Scleractinia). The crown-of-thorns sea star receives its name from venomous thorn-like spines that cover its upper surface, resembling the Biblical crown of thorns. It is one of the largest sea stars in the world. Photo: scienceinpublic.com.au

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