Common Starfish, Asterias rubens
The Common Starfish (Asterias rubens), also known as the Common Sea Star, is the most common species of starfish found in the northeast Atlantic Ocean. It is usually found on rocky and gravelly substrate.
This starfish has five arms and usually grows to between 4 and 12 inches in diameter, although some specimens have been recorded up to 21 inches across. It is typically orange or brown in color, but sometimes can be yellow, white, blue, purple or green; deep-water specimens are paler.
This is a popular sea star for use as a home decoration, where it is often found dried and preserved. It is a popular souvenir all around the coast of California, Florida, China, and various islands. It can be easily preserved, much like sea urchins and sand dollars.
Image Caption: Asterias rubens. Credit: Hans Hillewaert (CC BY-SA 3.0)