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Crustacean

Blue crab

Callinectes sapidus

Estuary shallows, seagrass, and sandy or muddy bottoms

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Blue crab

Photo: WitherSweat · CC BY-SA 4.0 · Source and license. Displayed as a resized crop. Photograph illustrates the species.

Habitat
Estuary shallows, seagrass, and sandy or muddy bottoms
Published depth range
Low-tide line to about 36 m
Viewing activities
Beach / tidepool · Snorkeling · Scuba diving

Field context

Bottom-dwelling and particularly common in estuaries; low tide line to roughly 36 m. Moves to deeper water during colder periods.

Observing responsibly

The beach filter covers shallow shore access here; Chesapeake Bay does not have the rocky tidepools typical of Monterey.

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?

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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

4,136 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.

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View example source records
  • OBIS · 2025-08-26iNaturalist research-grade observations · cdakon · https://creativecommons.org/licenses/by-nc/4.0/
  • OBIS · 2024-09-18SERC Blue Crab Study · ACT.SERC1 · https://creativecommons.org/licenses/by/4.0/
  • OBIS · 2024-09-16SERC Blue Crab Study · ACT.SERC1 · https://creativecommons.org/licenses/by/4.0/