State law prohibits leasing where oysters grow naturally. But those restrictions are based on century-old surveys, when oysters were much more abundant, so much of the bay is off-limits. Leasing also is completely banned in a handful of counties.
"We've got to clear away some of that underbrush and help to build our industry here," Griffin said.
The administration bill proposes to reserve for wild harvest only those waters where oysters recently were caught and to remove limitations on the size and location of leases. It also would remove the ban on corporations holding leases.
The measure would also establish a pair of "aquaculture enterprise zones" in the Patuxent and Rhode rivers. In those 50-acre tracts, leasing would be streamlined and essentially "pre-permitted" to make it easier to start raising oysters - either on the bottom or in floats on the water. Though given rights to use the bay for 20 years, leaseholders would be required to use their leases or risk losing them.
The bay's watermen traditionally have opposed any significant expansion of private leasing of the bay, fearing it would deprive them of the ability to pluck wild oysters from the most productive reefs. But with most wild oysters gone, at least some watermen are beginning to eye private aquaculture as a means of continuing to make a living from the bay.
"We don't have nowhere else to turn," said Larry W. Simns, president of the Maryland Watermen's Association. With the decline of the public fishery, and the state's ability to support it, he said that "if we don't do something ourselves, it ain't going to happen."
Simns said watermen remain wary. They want an opportunity or even guarantee they'll be able to get good leases, he said. They also want to be shown that they can make money raising oysters rather than roaming the bay to harvest what nature produces. He argued that the oyster diseases remain the biggest hurdle to large-scale aquaculture.
Waterfront property owners also may resist an expansion of aquaculture. Some have objected at times to private oyster floats or clam beds along the shore, where they complain they are unsightly and impede boating.
State officials say the legislation would bar leases within 50 feet of the shoreline or a pier, or in narrow creeks, coves or inlets - a provision meant to address landowner complaints.