Dysidea fragilis, Calliostoma zizyphinum, Flustra foliacea, Morchellium argus. Site: S Otter Rocks, Skerries, Portrush
 Dysidea fragilis, Calliostoma zizyphinum, Flustra foliacea, Morchellium argus. Event number: 19790619/02. Site: S Otter Rocks, Skerries, Portrush. 1979-06-19. Photograph © Ulster Museum. (8/9) 
 Ulster Museum (2026). Photograph of Dysidea fragilis, Calliostoma zizyphinum, Flustra foliacea, Morchellium argus. Site: S Otter Rocks, Skerries, Portrush. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_1086.jpg. Accessed on 2026-11-04