Metridium senile. Site: Carrickfergus Marina
 Metridium senile. Event number: 20201007/01. Site: Carrickfergus Marina. 2020-10-07. Photograph © Christine Morrow. (3/10) 
 Christine Morrow (2026). Photograph of Metridium senile. Site: Carrickfergus Marina. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=pa070011.jpg. Accessed on 2026-11-04