Maryland mammals

Atlantic spotted dolphin in Maryland

Stenella frontalis

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.

Atlantic spotted dolphin in Maryland, by the numbers

Rare in Maryland 58th most recorded of 57 mammals logged in Maryland

1 occurrence records

Records from 2000–2026.

When to look for the Atlantic spotted dolphin in Maryland

Most sightings fall in July.

1 Maryland occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence. Based on a small number of dated records; the seasonal pattern may not be representative.

Monthly Maryland records (table)
MonthRecords
January0
February0
March0
April0
May0
June0
July1
August0
September0
October0
November0
December0

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

Seasonality

Sparse observation record in Maryland; presence confirmed but timing of activity not well documented.

Occurrence map

Where Atlantic spotted dolphin has been recorded in Maryland

1 record mapped · zoom and drag to explore

1 Maryland record mapped

Maryland holds just one Atlantic spotted dolphin record from 2000 onward, a single GBIF entry dated July. One record can’t show a pattern, and it points to a rare visit rather than any regular seasonal presence.

That fits the species. This is a warm-water dolphin of the Gulf Stream and the tropical Atlantic. Off Maryland it’s a visitor at the edge of its comfort zone, most plausible when warm water pushes farthest up the shelf, and a midsummer date fits that. The Assateague shoreline, with its long ocean beach and steady stream of beachgoers and park staff, is simply where a dolphin in trouble, or one blown inshore, is most likely to be found and reported.

The state holds no resident population to speak of, which is why NatureServe treats its Maryland rank as not applicable. Maryland’s record is best read as a log of a rare visit: one encounter in more than two decades.

Occurrence data from GBIF.

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