Actinothoe sphyrodeta, Alcyonidium diaphanum, Polycarpa</i> sp.<i>. Site: N of Main Otter Rock, Skerries, Portrush
 Actinothoe sphyrodeta, Alcyonidium diaphanum, Polycarpa sp.. Event number: 19790618/03. Site: N of Main Otter Rock, Skerries, Portrush. 1979-06-18. Photograph © Ulster Museum. (5/12) 
 Ulster Museum (2026). Photograph of Actinothoe sphyrodeta, Alcyonidium diaphanum, Polycarpa sp.. Site: N of Main Otter Rock, Skerries, Portrush. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_1071.jpg. Accessed on 2026-11-04