Pachymatisma johnstonia. Site: S of Bull Point,  Rathlin Island
 Pachymatisma johnstonia. Event number: 20190516/01. Site: S of Bull Point, Rathlin Island. 2019-05-16. Photograph © Bernard Picton. (6/17) 
 Bernard Picton (2026). Photograph of Pachymatisma johnstonia. Site: S of Bull Point, Rathlin Island. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=_b197484.jpg. Accessed on 2026-11-04