Maryland mammals

Striped Dolphin in Maryland

Stenella coeruleoalba

Native to Maryland

Not listed as nonindigenous in Maryland by USGS NAS; native to its Maryland range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

Striped Dolphin in Maryland, by the numbers

Occasional in Maryland 35th most recorded of 100 mammals logged in Maryland

42 occurrence records

Records from 2000–2026.

42 total records count every Maryland occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 41; the monthly chart covers the 41 records with a full observation date.

When to look for the Striped Dolphin in Maryland

Most sightings fall in April.

41 Maryland occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Maryland records (table)
MonthRecords
January0
February6
March12
April21
May2
June0
July0
August0
September0
October0
November0
December0

Monthly striped dolphin occurrence records (iNaturalist and GBIF) in Maryland, 2000–2026.

Seasonality

Year-round in Maryland, with recorded sightings peaking in April.

Occurrence map

Where Striped Dolphin has been recorded in Maryland

41 records mapped · zoom and drag to explore

41 Maryland records mapped

Where it's recorded in Maryland

CountyRecords
Worcester County 14
Other localities 28

The complete county distribution, spread across 1 Maryland counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Striped dolphin is normally a warm-water, deep-pelagic species well offshore of the mid-Atlantic coast, so Maryland’s handful of records near Patapsco Valley and local river corridors almost certainly reflect stranded or displaced animals rather than a resident inshore population. NatureServe carries no ranked status for the species in Maryland.

The few sightings cluster in February, too thin and irregular a pattern to read as any real seasonal signal for a species this far outside its typical range in state waters.

More mammals in Maryland in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries