Okenia nodosa. Site: Ringhaddy Sound,  Strangford Lough
 Okenia nodosa. Event number: 20210104/01. Site: Ringhaddy Sound, Strangford Lough. 2021-01-04. Photograph © Christine Morrow. (36/50) 
 Christine Morrow (2026). Photograph of Okenia nodosa. Site: Ringhaddy Sound, Strangford Lough. [In] Marine Biodiversity Data Portal - NI.
https://habitas.org/mbdp/sitephoto.php?item=p1040248.jpg. Accessed on 2026-11-04