Halecium halecinum, Alcyonidium diaphanum. Site: SE of Vidal Rock, Carlingford Lough
 Halecium halecinum, Alcyonidium diaphanum. Event number: 19840606/01. Site: SE of Vidal Rock, Carlingford Lough. 1984-06-06. Photograph © Christine Howson. (11/18) 
 Christine Howson (2026). Photograph of Halecium halecinum, Alcyonidium diaphanum. Site: SE of Vidal Rock, Carlingford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_6424.jpg. Accessed on 2026-11-04