Looks like just one license with registration in the other.
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http://dnr.maryland.gov/Pages/service_fishing_license.aspx#CBCSPFL
Reciprocity
Virginia saltwater recreational fishing licenses with a Maryland/PRFC registration honored in Maryland tidal waters are:
Individual annual license
Individual temporary (10-day) license
Private boat license
Charter boat and head boat licenses (covers all persons fishing on boat and a registration is not needed)
Lifetime saltwater Recreational Fishing License
Special Lifetime recreational Fishing License for the permanently and totally disabled
Special Combined (FW/SW) Sportfish License
Rental boat license (covers all persons fishing on boat).
Maryland saltwater recreational fishing licenses with a Virginia registration honored in Virginia tidal saltwaters are:
Annual resident Chesapeake Bay and Coastal sport fishing license
Short-term (7-day) resident Chesapeake Bay and Coastal sport fishing license
Annual nonresident Chesapeake Bay and Coast sport fishing license
Short-term (7-day) nonresident Chesapeake Bay and Coastal sport fishing license
Lifetime Chesapeake Bay and Coastal sport fishing license for former prisoners of war or 100% service connected disabled American veterans,
Combination commercial/recreational (tidal fish license)
Private boat license
Consolidated senior sport fishing license.
Charter boat and head boat licenses (covers all persons fishing on boat and a registration is not needed)
Potomac River Fisheries Commission recreational fishing licenses honored in Virginia tidal saltwaters:
Individual annual license
Private boat license (covers all persons fishing on boat with a VA registration)
Charter boat license (covers all persons fishing on boat)
Potomac River Fisheries Commission recreational fishing licenses honored in Maryland tidal saltwaters:
Individual annual license
Private boat license (covers all persons with a Maryland/PRFC registration fishing on boat)
Charter boat license (covers all persons fishing on boat)
Maryland and Virginia saltwater recreational fishing licenses and their registrations are honored in the tidal saltwaters of the Potomac River.