Polymastia boletiformis, Stelligera stuposa. Site: White Cliffs, Church Bay, Rathlin Island
 Polymastia boletiformis, Stelligera stuposa. Event number: 19850704/01. Site: White Cliffs, Church Bay, Rathlin Island. 1985-07-04. Photograph © Ulster Museum. (4/15) 
 Ulster Museum (2026). Photograph of Polymastia boletiformis, Stelligera stuposa. Site: White Cliffs, Church Bay, Rathlin Island. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_10768.jpg. Accessed on 2026-11-04