Metridium senile. Site: Picton Reef, Rathlin Island
 Metridium senile. Event number: 20240524/01. Site: Picton Reef, Rathlin Island. 2024-05-24. Photograph © Kirsty Andrews. (8/28) 
 Kirsty Andrews (2026). Photograph of Metridium senile. Site: Picton Reef, Rathlin Island. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=kja0735.jpg. Accessed on 2026-11-03