(a) It shall be unlawful for a person to use any hydraulic dredge or mechanical device employing a vacuum or suction for the harvesting of oysters from any natural oyster bed without the prior written permission of the Department.
(b) It shall be unlawful for a person to harvest oysters from the State's natural oyster beds without immediately culling said live oysters from all shell and other materials and returning said shell and other materials to the State's natural oyster beds. Oysters shall be culled as aforesaid so that 2 bushels of oysters shall not contain more than 5 percent shells and other materials.