Pachymatisma johnstonia, Hemimycale columella. Site: E of Fair Head
 Pachymatisma johnstonia, Hemimycale columella. Event number: 19840619/02. Site: E of Fair Head. 1984-06-19. Photograph © David Connor. (4/14) 
 David Connor (2026). Photograph of Pachymatisma johnstonia, Hemimycale columella. Site: E of Fair Head. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_6715.jpg. Accessed on 2026-11-04