Boreolithothamnion glaciale. Site: Ballyhenry Island,  Strangford Lough
 Boreolithothamnion glaciale. Event number: 20201119/01. Site: Ballyhenry Island, Strangford Lough. 2020-11-19. Photograph © Bernard Picton. (57/117) 
 Bernard Picton (2026). Photograph of Boreolithothamnion glaciale. Site: Ballyhenry Island, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=_b190078.jpg. Accessed on 2026-11-04