Trididemnum cereum. Site: Ballyhenry Bay,  Strangford Lough
 Trididemnum cereum. Event number: 20230812/02. Site: Ballyhenry Bay, Strangford Lough. 2023-08-12. Photograph © Bernard Picton. (27/28) 
 Bernard Picton (2026). Photograph of Trididemnum cereum. Site: Ballyhenry Bay, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=_b232803.jpg. Accessed on 2026-11-03