Delesseria sanguinea. Site: Donaghadee Sound, Copeland Islands
 Delesseria sanguinea. Event number: 19850709/04. Site: Donaghadee Sound, Copeland Islands. 1985-07-09. Photograph © Ulster Museum. (11/15) 
 Ulster Museum (2026). Photograph of Delesseria sanguinea. Site: Donaghadee Sound, Copeland Islands. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_11080.jpg. Accessed on 2026-11-04