Species Detail - Common Spider Crab (Maja brachydactyla) - Species information displayed is based on the dataset "Explore Your Shore".

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
Maja brachydactyla
Common Spider Crab
NHMSYS0020475548 RecommendedWell-formed
N/A
mabra
Balss, 1922
Crustacean
Species
137
63
31
06/05/2019
17/04/2025
1 January (recorded in 2016)
30 December (recorded in 2019)
National Biodiversity Data Centre, Explore Your Shore, National Biodiversity Data Centre, Ireland, Common Spider Crab (Maja brachydactyla), accessed 19 January 2026, https://maps.biodiversityireland.ie/Dataset/305/Species/23030

Records per month (across all datasets)

Records per year (across all datasets)