Antedon bifida, Ophiocomina nigra. Site: SE of Abbey Rock, Strangford Lough
 Antedon bifida, Ophiocomina nigra. Event number: 19830601/03. Site: SE of Abbey Rock, Strangford Lough. 1983-06-01. Photograph © Christine Howson. (9/15) 
 Christine Howson (2026). Photograph of Antedon bifida, Ophiocomina nigra. Site: SE of Abbey Rock, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_1966.jpg. Accessed on 2026-11-04