Metridium senile. Site: Inner Lees Wreck, Ballyhenry Island, Strangford Lough
 Metridium senile. Event number: 20241017/01. Site: Inner Lees Wreck, Ballyhenry Island, Strangford Lough. 2024-10-17. Photograph © Dan Bolt. (85/99) 
 Dan Bolt (2026). Photograph of Metridium senile. Site: Inner Lees Wreck, Ballyhenry Island, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=pa175812.jpg. Accessed on 2026-11-04