Actinothoe sphyrodeta. Site: Ballyhenry Island, Strangford Lough
 Actinothoe sphyrodeta. Event number: 19820630/04. Site: Ballyhenry Island, Strangford Lough. 1982-06-30. Photograph © Bernard Picton. (9/15) 
 Bernard Picton (2026). Photograph of Actinothoe sphyrodeta. Site: Ballyhenry Island, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_0662.jpg. Accessed on 2026-11-04