Plocamium cartilagineum. Site: The Gobbins, Island Magee
 Plocamium cartilagineum. Event number: 19830628/04. Site: The Gobbins, Island Magee. 1983-06-28. Photograph © Christine Howson. (6/9) 
 Christine Howson (2026). Photograph of Plocamium cartilagineum. Site: The Gobbins, Island Magee. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_2446.jpg. Accessed on 2026-11-04