Halecium halecinum, Cystoclonium purpureum. Site: W of Watson Rocks, Carlingford Lough
 Halecium halecinum, Cystoclonium purpureum. Event number: 19840607/08. Site: W of Watson Rocks, Carlingford Lough. 1984-06-07. Photograph © Christine Howson. (8/10) 
 Christine Howson (2026). Photograph of Halecium halecinum, Cystoclonium purpureum. Site: W of Watson Rocks, Carlingford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_6631.jpg. Accessed on 2026-11-04