Cliona celata, Ophiothrix fragilis, Ophiocomina nigra, Ophiopholis aculeata, Clavelina lepadiformis. Site: Holm Bay, Strangford Lough
 Cliona celata, Ophiothrix fragilis, Ophiocomina nigra, Ophiopholis aculeata, Clavelina lepadiformis. Event number: 19830803/05. Site: Holm Bay, Strangford Lough. 1983-08-03. Photograph © Bernard Picton. (2/14) 
 Bernard Picton (2026). Photograph of Cliona celata, Ophiothrix fragilis, Ophiocomina nigra, Ophiopholis aculeata, Clavelina lepadiformis. Site: Holm Bay, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_2693.jpg. Accessed on 2026-11-04