Pachymatisma johnstonia, Haliclona viscosa, Delesseria sanguinea. Site: Castle Head, Rathlin Island
 Pachymatisma johnstonia, Haliclona viscosa, Delesseria sanguinea. Event number: 19850626/02. Site: Castle Head, Rathlin Island. 1985-06-26. Photograph © David Connor. (5/7) 
 David Connor (2026). Photograph of Pachymatisma johnstonia, Haliclona viscosa, Delesseria sanguinea. Site: Castle Head, Rathlin Island. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_10159.jpg. Accessed on 2026-11-04