Psilaster andromeda Psilaster andromeda Psilaster andromeda is a species of starfish in the family Astropectinidae. It is native to the northeastern Atlantic Ocean where it occurs at abyssal depths. "Psilaster andromeda" is a deep water species of starfish native to the northeastern Atlantic Ocean. Its range extends from Murmansk and the coasts of Norway to the Faeroes, the Kattegat, the United Kingdom and the Bay of Biscay. It is present in the Rockall Trough. It is found in Norwegian fiords on muddy bottoms at depths of . It is also found in the Porcupine Seabight and on the Porcupine Abyssal Plain in
Rockall 17.15 m (56.27 ft). It is often washed over by large storm waves, particularly in winter. There is a small ledge of , known as Hall's Ledge, from the summit on the rock's western face. It is the only named geographical location on the rock. The nearest point on land from Rockall is 301.3 km, or 162.7 nmi, east at the uninhabited Scottish island of Soay in the St Kilda archipelago. The nearest inhabited area lies 303.2 km, or 163.7 nmi, east at Hirta, the largest island in the St. Kilda group, which is populated intermittently at a single military