Pachymatisma johnstonia, Clathrina coriacea, Dendrodoa grossularia. Site: Torr Head
 Pachymatisma johnstonia, Clathrina coriacea, Dendrodoa grossularia. Event number: 19830825/01. Site: Torr Head. 1983-08-25. Photograph © Christine Howson. (2/7) 
 Christine Howson (2026). Photograph of Pachymatisma johnstonia, Clathrina coriacea, Dendrodoa grossularia. Site: Torr Head. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_5706.jpg. Accessed on 2026-11-04