Maryland Code, Natural Resources § 4-1005

(a) Subject to restrictions promulgated pursuant to this subtitle, a person may catch oysters or clams in the waters of the State only by hand, rakes, tongs, patent tongs, diving apparatus, dredges, handscrapes, cultch material suspended on strings, in trays, in bags, or similar devices. Soft-shell clams may be caught by hydraulic or mechanical dredges or rigs.

(b) The Department may make uniform the size and weight of patent tongs in waters where patent tongs are permitted. However, any person using any size or weight patent tongs on June 1, 1964, may continue to use them.

(c) A person may catch oyster spat in the waters of the State by suspended means such as cultch material on strings, trays, bags, or similar devices, which do not touch the bottom and do not interfere with navigation.