Pachymatisma johnstonia. Site: Duncan's Bo,  Rathlin Island
 Pachymatisma johnstonia. Event number: 20200927/01. Site: Duncan's Bo, Rathlin Island. 2020-09-27. Photograph © Bernard Picton. (14/71) 
 Bernard Picton (2026). Photograph of Pachymatisma johnstonia. Site: Duncan's Bo, Rathlin Island. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=_b205837.jpg. Accessed on 2026-11-04