A 21-member Oyster Advisory Commission recommends Maryland watermen should be taught how to raise oysters instead of having the state pay millions of dollars to plant oysters in the Chesapeake Bay that are later harvested. The task force says planting efforts should continue, but oysters should be left in the bay where the filter feeders can help improve water quality. Leaving the oysters in place also will improve chances that some may develop resistance to diseases that have ravaged oyster stocks. The commission was created by the General Assembly in 2007 to develop recommendations on what could be done to restore dwindling oyster stocks and help the seafood industry.