Species Detail - Acorn Barnacle (Semibalanus balanoides) - Species information displayed is based on the dataset "Coastal and Marine Species Database".

Terrestrial Map - 10km

Distribution of the number of records recorded within each 10km grid square (ITM).
Live Map

Marine Map - 50km

Distribution of the number of records recorded within each 50km grid square (WGS84).
Live Map
Semibalanus balanoides
Acorn Barnacle
NBNSYS0000042568 RecommendedWell-formed
N/A
sebal
(Linnaeus, 1767)
Crustacean
Species
5
4
4
13/04/2014
16/05/2014
1 January (recorded in 1985)
30 December (recorded in 2025)
Collated by the National Biodiversity Data Centre from different sources, Coastal and Marine Species Database, National Biodiversity Data Centre, Ireland, Acorn Barnacle (Semibalanus balanoides), accessed 08 April 2026, https://maps.biodiversityireland.ie/Dataset/197/Species/17538

Records per month (across all datasets)

Records per year (across all datasets)