The Great Baltimore Oyster Partnership

The Great Baltimore Oyster Partnership (HM269Q)

Location: Baltimore, MD 21202
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Country: United States of America
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N 39° 17.162', W 76° 36.532'

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Did you know that oysters can live in Baltimore's Inner Harbor?
The Great Baltimore Oyster Partnership grows baby oysters (called spat) in cages hanging from docks and piers around the Harbor, inside the cages are recycled oyster shells and attached to each shell are six or more spat. Each cage can hold up to 800 baby oysters.

The cages provide a safe home fro the spat to grow by protecting them from predators and keeping them near the surface where there is plenty of food and oxygen.

Image captions:
1950 - Watermen harvesting oysters for consumption.
2015 - A volunteer growing oysters for restoration.

In the 1800s, Baltimore was the oyster canning capital of the world. 800,000 tons of oysters were harvested annually from the Chesapeake Bay. Today, volunteers help to restore the oyster population by growing spat-on-shell in cages around the Baltimore Harbor. These oysters are grown fro restoration purposes are not for human consumption.

For more information visit

A single oyster can filter up to 50 gallons of water a day.

Every oyster is a tiny water filter. At their peak, there were enough oysters to filter all the water in the Chesapeake Bay every three days. Unfortunately, the Bay's oyster population

has declined to 2% of historic levels. So by restoring the oyster population we are also helping to clean the Bay.

After nine months the spat are permanently relocated to a Chesapeake Bay oyster sanctuary where they will live out the rest of their lives protected from harvesting.

Oysters provide an ideal habitat for Chesapeake Bay animals.
HM NumberHM269Q
Marker ConditionNo reports yet
Date Added Monday, March 26th, 2018 at 10:01am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)18S E 361244 N 4349752
Decimal Degrees39.28603333, -76.60886667
Degrees and Decimal MinutesN 39° 17.162', W 76° 36.532'
Degrees, Minutes and Seconds39° 17' 9.7199999999999" N, 76° 36' 31.92" W
Driving DirectionsGoogle Maps
Area Code(s)301, 410, 443
Which side of the road?Marker is on the right when traveling East
Closest Postal AddressAt or near 200-298 Pier 3, Baltimore MD 21202, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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