Pachymatisma johnstonia, Palinurus elephas. Site: Ruecallan, Rathlin Island
 Pachymatisma johnstonia, Palinurus elephas. Event number: 19850702/01. Site: Ruecallan, Rathlin Island. 1985-07-02. Photograph © Ulster Museum. (3/32) 
 Ulster Museum (2026). Photograph of Pachymatisma johnstonia, Palinurus elephas. Site: Ruecallan, Rathlin Island. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_10543.jpg. Accessed on 2026-11-04