Antennella secundaria, Halarachnion ligulatum. Site: Murlough Bay
 Antennella secundaria, Halarachnion ligulatum. Event number: 19850813/01. Site: Murlough Bay. 1985-08-13. Photograph © Ulster Museum. (5/14) 
 Ulster Museum (2026). Photograph of Antennella secundaria, Halarachnion ligulatum. Site: Murlough Bay. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_12355.jpg. Accessed on 2026-11-04