Massachusetts mammals

Minke Whale in Massachusetts

Balaenoptera acutorostrata

Native to Massachusetts S3 Vulnerable in Massachusetts

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

Minke Whale in Massachusetts, by the numbers

Occasional in Massachusetts 42nd most recorded of 93 mammals logged in Massachusetts

132 occurrence records
86 with iNaturalist photos
Jul 7, 2026 Last seen in Massachusetts

Records from 2000–2026.

132 total records count every Massachusetts occurrence from GBIF and iNaturalist; the monthly chart covers the 131 records with a full observation date.

When to look for the Minke Whale in Massachusetts

Most sightings fall in July to August.

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

Monthly Massachusetts records (table)
MonthRecords
January1
February2
March5
April14
May9
June8
July19
August25
September10
October22
November11
December5

Monthly minke whale occurrence records (iNaturalist and GBIF) in Massachusetts, 2000–2026.

Seasonality

Year-round in Massachusetts, with recorded sightings peaking in July–August, with a smaller rise in October.

Occurrence map

Where Minke Whale has been recorded in Massachusetts

132 records mapped · zoom and drag to explore

121 Massachusetts records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Cape Cod National Seashore 8

Protected places with the most minke whale sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Massachusetts

CountyRecords
Barnstable County 20
Essex County 15
Plymouth County 9
Nantucket County 2
Bristol County 2
Dukes County 1
Suffolk County 1
Other localities 82

The complete county distribution, spread across 7 Massachusetts counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Minke whales are the smallest of the state’s baleen whales, and Cape Cod National Seashore alone accounts for the majority of Massachusetts’ named records, its position near Stellwagen Bank putting it close to some of the richest whale-feeding water on the East Coast.

Records show three bumps rather than one clean peak, April, a July and August rise, and another in October, a scattered pattern that fits a species known for irregular, often solitary feeding trips rather than the tight, predictable migration window humpback and fin whales show off the same coast. Massachusetts carries its own S3, vulnerable, rank for minke whales, a step below the species’ secure global status.

Occurrence data from iNaturalist and GBIF.

More mammals in Massachusetts 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
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"