Calliostoma zizyphinum. Site: Archway, The North Wall, Rathlin Island
 Calliostoma zizyphinum. Event number: 20240520/01. Site: Archway, The North Wall, Rathlin Island. 2024-05-20. Photograph © Erling Svensen. (10/88) 
 Erling Svensen (2026). Photograph of Calliostoma zizyphinum. Site: Archway, The North Wall, Rathlin Island. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=es2024_064.jpg. Accessed on 2026-11-03