You can't visit Baltimore without trying blue crab – Maryland's state crustacean and a Chesapeake Bay delicacy. Blue crabs, with their bright blue claws, are best enjoyed in season and thankfully that's a good portion of the year! Chesapeake crabbing season begins April 1 and runs through December 15, although the biggest, heaviest crabs are typically harvested during the fall months (September to mid-November). Roughly half of the total U.S. blue crab harvest comes from Maryland.