At first glance it looks like a colorful star. It's purple and brown. However, a cover of thorns hides the inner beauty.  If you try to touch it, the poison at the tip of the thorns will hurt you.  It's a danger not just to humans however. The creature, generally with a diameter of 30 centimeters, is a voracious coral reef eater.  It is called the Acanthaster planci or the crown-of-thorns (CoT).

On March 20, Ir Barnabas Wu