Antedon bifida. Site: Marlfield Bay, Strangford Lough
 Antedon bifida. Event number: 19800630/01. Site: Marlfield Bay, Strangford Lough. 1980-06-30. Photograph © Ulster Museum. (2/7) 
 Ulster Museum (2026). Photograph of Antedon bifida. Site: Marlfield Bay, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_1492.jpg. Accessed on 2026-11-04