Photo: (c) Jamie VanBuskirk, some rights reserved (CC BY) · CC-BY · Source and license. Displayed as a resized crop. Photograph illustrates the species.
Habitat
Brackish to salty estuary waters, attached to hard surfaces and oyster reefs
Habitat zone
Intertidal and submerged estuary reefs
Viewing activities
Beach / tidepool
What to look for
An irregular, rough shell; adults in the field guide are commonly about 3–5 inches long.
Life and behavior
Adults remain attached and build clustered reef habitat.
When to look
The available records do not establish a reliable local viewing season. Use the map’s month filter to inspect dated observations; it does not predict an encounter.
WHERE HAS IT BEEN RECORDED?
Explore the featured regions
These dated records show past presence. They do not establish today’s abundance, guarantee a sighting, or describe the species’ entire range.
Chesapeake Bay
Recorded here
632 OBIS records in the regional query · snapshot 2026-09-12.
Individual records in this sample do not supply habitat or depth. Use the species reference above for biological context.
