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Species Focus - Common Spider Crab - Maja brachydactyla
01 Jun 2026
Ah, the North Welsh summer. Nothing beats the sun, the sands at Traeth Llanddwyn and the annual migration of hundreds of crabs! Known as the Common Spider Crab, Maja brachydactyla is our largest British crustacean, easily identifiable by its spiny rounded carapace, brown/reddish colour and very long legs (hence the arachnological component). These crabs are usually denizens of the deep during the ...
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