broken shell. . Site: St.Drumnagreagh Port
 broken shell. Event number: 19830818/01. Site: St.Drumnagreagh Port. 1983-08-18. Photograph © David Erwin. (4/9) 
 David Erwin (2026). Photograph of broken shell. . Site: St.Drumnagreagh Port. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_3017.jpg. Accessed on 2026-11-04