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| Polybius depurator. Event number: 19840801/02. Site: Craigbrain, Ballywalter. 1984-08-01. Photograph © Christine Howson. (7/13) |
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| Christine Howson (2026). Photograph of Polybius depurator. Site: Craigbrain, Ballywalter. [In] Marine Biodiversity Data Portal - NI. https://habitas.org/mbdp/sitephoto.php?item=niss_7993.jpg. Accessed on 2026-11-04 |