Heterosiphonia plumosa. Site: Russells Rock, Maidens
 Heterosiphonia plumosa. Event number: 19850801/03. Site: Russells Rock, Maidens. 1985-08-01. Photograph © Ulster Museum. (6/10) 
 Ulster Museum (2026). Photograph of Heterosiphonia plumosa. Site: Russells Rock, Maidens. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_12178.jpg. Accessed on 2026-11-04