We just learned about the Sunflower Sea Star.
Another type of starfish is the Crown of Thorns Starfish, also called acanthaster planci.
This starfish grows to be about 14 inches, and his sharp spikes on top that hurt and sting if the starfish is stepped on.
They live around Australia, and come in colors of purple, blue, red, grey, brown, green or yellow.
The name crown of thorns comes from the Bible story of Jesus wearing a crown of thorns.
Because the starfish kind of looks like a thorny crown the people named it that.
(from: wikipedia - crown of thorns starfish)
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