Iophonopsis nigricans. Site: W of Ballyhenry Island,  Strangford Lough
 Iophonopsis nigricans. Event number: 20230813/01. Site: W of Ballyhenry Island, Strangford Lough. 2023-08-13. Photograph © Bernard Picton. (23/26) 
 Bernard Picton (2026). Photograph of Iophonopsis nigricans. Site: W of Ballyhenry Island, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=_b232833.jpg. Accessed on 2026-11-04