Antedon bifida. Site: W Ramore Head, Portrush
 Antedon bifida. Event number: 19850723/04. Site: W Ramore Head, Portrush. 1985-07-23. Photograph © Christine Howson. (17/18) 
 Christine Howson (2026). Photograph of Antedon bifida. Site: W Ramore Head, Portrush. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=niss_11470.jpg. Accessed on 2026-11-04