Alcyonidium diaphanum. Site: Barkley Rocks, Millisle
 Alcyonidium diaphanum. Event number: 19840731/03. Site: Barkley Rocks, Millisle. 1984-07-31. Photograph © Christine Howson. (3/5) 
 Christine Howson (2026). Photograph of Alcyonidium diaphanum. Site: Barkley Rocks, Millisle. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_7921.jpg. Accessed on 2026-11-04