Callinectes sapidus, the Atlantic blue crab, is an invasive species in the Mediterranean since the 2000s, introduced via ballast water from the US East Coast. Carapace up to 23 cm, electric-blue claws in males. A fast swimmer thanks to its rearmost pair of paddle-shaped legs. Major population increase in recent years, with significant ecological and commercial impact.
Photo of Atlantic blue crab
Frequently asked questions
How big is the Atlantic blue crab?
Atlantic blue crab (Callinectes sapidus) reaches 10–23 cm in length.
At what depth can you find the Atlantic blue crab?
Atlantic blue crab is found between 0–35 m deep.
Is the Atlantic blue crab dangerous to divers?
Danger level: Harmless.
What is the conservation status of the Atlantic blue crab?
IUCN status: Least concern (LC).
Where can you find the Atlantic blue crab?
Found in: Caribbean, East Atlantic, Mediterranean, Eastern Pacific.