Common starfish biology. This predatory species takes a range of marine prey including other echinoderms (sea urchins, starfish and brittlestars), worms and molluscs as well as carrion. It often prizes bivalve shells apart, using the suckers on the tube-feet. read more
The common starfish or common sea star (Asterias rubens) is the most common and familiar starfish in the north-east Atlantic. Belonging to the family Asteriidae, it has five arms and usually grows to between 10–30 cm across, although larger specimens (up to 52 cm across) are known. read more
Starfish is not a term in use any more because they are not fish. They are called “sea stars.” They are echinoderms of the phylum Echinodermata. They have no terrestrial relatives. They have a number of marine relatives that you often would not recognize by sight that they were related. read more