Sertularia argentea, Didemnum maculosum. Site: Skerries Roadstead, Portrush
 Sertularia argentea, Didemnum maculosum. Event number: 19850723/02. Site: Skerries Roadstead, Portrush. 1985-07-23. Photograph © Ulster Museum. (13/14) 
 Ulster Museum (2026). Photograph of Sertularia argentea, Didemnum maculosum. Site: Skerries Roadstead, Portrush. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_11362.jpg. Accessed on 2026-11-04