Obelia dichotoma, Ascidiella aspersa. Site: E of Black Rock, Strangford Lough
 Obelia dichotoma, Ascidiella aspersa. Event number: 19830809/02. Site: E of Black Rock, Strangford Lough. 1983-08-09. Photograph © David Erwin. (13/14) 
 David Erwin (2026). Photograph of Obelia dichotoma, Ascidiella aspersa. Site: E of Black Rock, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_2822.jpg. Accessed on 2026-11-04