Alcyonidium diaphanum, Pleurobranchus membranaceus. Site: NE of White Cliffs, Port Muck
 Alcyonidium diaphanum, Pleurobranchus membranaceus. Event number: 19830629/02. Site: NE of White Cliffs, Port Muck. 1983-06-29. Photograph © Bernard Picton. (11/19) 
 Bernard Picton (2026). Photograph of Alcyonidium diaphanum, Pleurobranchus membranaceus. Site: NE of White Cliffs, Port Muck. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_2474.jpg. Accessed on 2026-11-04