Hydrallmania falcata. Site: 600m S of Little Skerrie, Skerries, Portrush
 Hydrallmania falcata. Event number: 19790630/01. Site: 600m S of Little Skerrie, Skerries, Portrush. 1979-06-30. Photograph © Ulster Museum. (3/18) 
 Ulster Museum (2026). Photograph of Hydrallmania falcata. Site: 600m S of Little Skerrie, Skerries, Portrush. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_1170.jpg. Accessed on 2026-11-04