Sidnyum turbinatum. Site: Ballyhenry Island,  Strangford Lough
 Sidnyum turbinatum. Event number: 20200918/01. Site: Ballyhenry Island, Strangford Lough. 2020-09-18. Photograph © Christine Morrow. (17/125) 
 Christine Morrow (2026). Photograph of Sidnyum turbinatum. Site: Ballyhenry Island, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=p9180019.jpg. Accessed on 2026-11-04