Plocamium cartilagineum. Site: Whitehead, Belfast Lough
 Plocamium cartilagineum. Event number: 19840524/01. Site: Whitehead, Belfast Lough. 1984-05-24. Photograph © Bernard Picton. (6/8) 
 Bernard Picton (2026). Photograph of Plocamium cartilagineum. Site: Whitehead, Belfast Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_6093.jpg. Accessed on 2026-11-04