Polymastia penicillus. Site: Loughan Bay
 Polymastia penicillus. Event number: 19830825/05. Site: Loughan Bay. 1983-08-25. Photograph © Bernard Picton. (5/10) 
 Bernard Picton (2026). Photograph of Polymastia penicillus. Site: Loughan Bay. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_5766.jpg. Accessed on 2026-11-04