Laminaria hyperborea. Site: NW Portstewart Point
 Laminaria hyperborea. Event number: 19840705/07. Site: NW Portstewart Point. 1984-07-05. Photograph © Christine Howson. (1/10) 
 Christine Howson (2026). Photograph of Laminaria hyperborea. Site: NW Portstewart Point. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_7573.jpg. Accessed on 2026-11-04