Plocamium cartilagineum. Site: E of Sheep Is, Ballintoy
 Plocamium cartilagineum. Event number: 19830519/05. Site: E of Sheep Is, Ballintoy. 1983-05-19. Photograph © David Erwin. (4/9) 
 David Erwin (2026). Photograph of Plocamium cartilagineum. Site: E of Sheep Is, Ballintoy. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_1753.jpg. Accessed on 2026-11-04