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Crown of Thorns-jonhanson

A 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.

A. planci has a very wide Indo-Pacific distribution. It is perhaps most common in Australia, but can occur at tropical and subtropical latitudes from the Red Sea and the east African coast across the Indian Ocean, and across the Pacific Ocean to the west coast of Central America. It occurs where coral reefs or hard coral communities occur in this region.

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