Crown-of-thorns Starfish

Acanthaster planci, commonly known as the crown-of-thorns starfish, is a large multi-armed starfish (or seastar) that usually preys upon hard, or stony, coral polyps (Scleractinia). The crown-of-thorns receives its name from venomous thorn-like spines that cover its upper surface. It is the second largest sea star in the world. Only the sunflower seastar (Pycnopodia helianthoides) is larger.

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

Read more about Crown-of-thorns Starfish:  Physical Description, Population Control

Other articles related to "starfish":

Crown-of-thorns Starfish - Population Control
... Population numbers for the crown-of-thorns have been increasing since the 1970s ... To prevent overpopulation of crown-of-thorns causing widespread destruction to coral reef habitats, humans have implemented a variety of control measures ... Injecting sodium bisulphate into the starfish is the most efficient measure in practice ...
Environmental Threats To The Great Barrier Reef - Crown-of-thorns Starfish
... The Crown-of-Thorns Starfish is a coral reef predator which preys on coral polyps by climbing onto them, extruding its stomach over them, and releasing ... Geological evidence suggests that the Crown-of-Thorns Starfish has been part of the Great Barrier Reef's ecology for "at least several thousand years", but there is ... Large outbreaks of these starfish can devastate reefs ...