Starfish
Common Starfish
Asterias rubens
How to spot it
The classic orange five-armed star. The arms taper to a point and carry a knobbly central line of pale spines but no big spikes. Turns up almost anywhere, often near mussel beds.
Usually seen at
4-50 m (median 16 m)
Size
Medium (10-50 cm)
Habitat
Sandy bottom, Rocky crevice
Behaviour
On bottom
Where it's seen
Occurrence records around the UK and north-east Atlantic (OBIS).