Chorda filum. Site: The Black Ghee, Lough Foyle 
 Chorda filum. Event number: 19830622/04. Site: The Black Ghee, Lough Foyle. 1983-06-22. Photograph © Christine Howson. (5/5) 
 Christine Howson (2026). Photograph of Chorda filum. Site: The Black Ghee, Lough Foyle. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_2369.jpg. Accessed on 2026-11-04