Species Detail - Common Spider Crab (Maja brachydactyla) - Species information displayed is based on all datasets.

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
548
148
54
18/08/1993
22/09/2024
1 January (recorded in 2016)
30 December (recorded in 2019)
National Biodiversity Data Centre, Ireland, Common Spider Crab (Maja brachydactyla), accessed 18 July 2025, <https://maps.biodiversityireland.ie/Species/23030>

Records per month (across all datasets)

Records per year (across all datasets)