Polymastia boletiformis. Site: Church Bay, Rathlin Island
 Polymastia boletiformis. Event number: 20240524/02. Site: Church Bay, Rathlin Island. 2024-05-24. Photograph © Bernard Picton. (82/96) 
 Bernard Picton (2026). Photograph of Polymastia boletiformis. Site: Church Bay, Rathlin Island. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=_b245427.jpg. Accessed on 2026-11-04