Polymastia boletiformis, Eucratea loricata, Securiflustra securifrons, Clavelina lepadiformis. Site: NW Little Skerrie, Skerries, Portrush
 Polymastia boletiformis, Eucratea loricata, Securiflustra securifrons, Clavelina lepadiformis. Event number: 19820803/01. Site: NW Little Skerrie, Skerries, Portrush. 1982-08-03. Photograph © David Erwin. (2/9) 
 David Erwin (2026). Photograph of Polymastia boletiformis, Eucratea loricata, Securiflustra securifrons, Clavelina lepadiformis. Site: NW Little Skerrie, Skerries, Portrush. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_0490.jpg. Accessed on 2026-11-04