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Distribution Map: Umbonula littoralis - data from NBN (National Biodiversity Network) mapping facility, UK.

Map at NBN website: Umbonula littoralis

Picton, B.E. & Morrow, C.C. (2024). Distribution map for Umbonula littoralis. Hastings, 1944. [In] Marine Biodiversity Data Portal NI. https://www2.habitas.org.uk/marbiop-ni/flex_map.php?item=Y3070&ni=1. Accessed on 2026-05-31