Marthasterias glacialis. Site: North of The Giants Causeway
 Marthasterias glacialis. Event number: 19820730/02. Site: North of The Giants Causeway. 1982-07-30. Photograph © David Erwin. (13/17) 
 David Erwin (2026). Photograph of Marthasterias glacialis. Site: North of The Giants Causeway. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_0463.jpg. Accessed on 2026-11-04