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Oysters & Clams

Fishing Regulations Maryland Freshwater Fishing

Maryland residents may harvest oysters and clams for recreational purposes. No license is required.

Refer to maps of Maryland Shellfish Harvesting Areas for information on areas of restricted waters, closures, and coordinates of sanctuaries online via the DNR Shellfish Program webpage under related links: dnr.maryland.gov/fisheries/oysters.

You may also call the Maryland Department of the Environment hotline 800-541-1210 to obtain information on conditional closures due to water quality or other environmental issues.

Recreational shellfish regulations for the Potomac River can be found at prfc.us.

It is Illegal

  • To take oysters or clams for recreational purposes while aboard a vessel where any person is engaged in commercial oystering or clamming.
  • To recreationally harvest oysters or clams within a leased area, harvest reserve area, sanctuary or any other area closed by the State.
  • To harvest oysters or clams if you are not a resident of Maryland.*

* However, a nonresident may harvest clams in Worcester County.

Oysters

Season

October 1–March 31

Daily Harvest Restrictions

1 bushel/person/day

Time of Day

Harvest is only permitted:

  • Monday–Friday: Sunrise to 3 p.m.
  • Saturday: Sunrise until 12 p.m.

Gear Restrictions

A person may catch oysters ONLY by:

  • Hand
  • Shaft tongs
  • Rakes
  • Diving (includes SCUBA)
  • Culling
  • All shell and undersized oysters shall be returned to the bar from which they were caught.

Minimum Size Limits

Three inches measured from hinge to
bill along the longest part of the shell.

Hard Clams

Daily Harvest Restrictions

250 clams/person/day

Gear Restrictions

Limited to hand-operated gear only, including hand rakes.

Mechanical harvesting is not allowed.

Minimum Size Limits

One inch transverse measurement

Rangia Clams

The Rangia clam is often found in Maryland in low salinity water. Many of these areas, especially those within 200 feet of shore, have not been tested or approved by the Maryland Department of the Environment for shellfish harvest, and the consumption of these clams is not recommended.

Rangia clams should not be confused with the better-known hard clam found primarily in the Coastal Bays.