Polymastia penicillus. Site: Duncan's Bo, Rathlin Island
 Polymastia penicillus. Event number: 20240519/01. Site: Duncan's Bo, Rathlin Island. 2024-05-19. Photograph © Libby Keatley. (81/110) 
 Libby Keatley (2026). Photograph of Polymastia penicillus. Site: Duncan's Bo, Rathlin Island. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=p5190043.jpg. Accessed on 2026-11-04