The common starfish (Asterias rubens) is the most common and familiar starfish in the north-east Atlantic. It has five arms and usually grows to between 10-30cm across, although larger specimens (up to 52cm across) are known. The common starfish is usually orange or brown, and sometimes violet; deep-water specimens are pale. The common starfish is to be found on rocky and gravelly substrates.

External links

• Basic information
• British Marine Life Society study