Pachymatisma johnstonia. Site: Carrick-a-rede
 Pachymatisma johnstonia. Event number: 20211017/01. Site: Carrick-a-rede. 2021-10-17. Photograph © Bernard Picton. (12/40) 
 Bernard Picton (2026). Photograph of Pachymatisma johnstonia. Site: Carrick-a-rede. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=_b217705.jpg. Accessed on 2026-11-04