New Jersey mammals

Minke Whale in New Jersey

Balaenoptera acutorostrata

Native to New Jersey

Not listed as nonindigenous in New Jersey by USGS NAS; treated as native to its mapped New Jersey 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 New Jersey, by the numbers

Occasional in New Jersey 55th most recorded of 94 mammals logged in New Jersey

11 occurrence records
7 with iNaturalist photos
Dec 3, 2024 Last seen in New Jersey

Records from 2000–2026.

When to look for the Minke Whale in New Jersey

Most sightings fall in December.

11 New Jersey 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 New Jersey records (table)
MonthRecords
January0
February0
March0
April1
May2
June1
July1
August1
September0
October0
November0
December5

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

Seasonality

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

Occurrence map

Where Minke Whale has been recorded in New Jersey

11 records mapped · zoom and drag to explore

7 New Jersey records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Brigantine National Wilderness Area 1
Gateway National Recreation Area 1

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 New Jersey

CountyRecords
Atlantic County 1
Essex County 1
Hunterdon County 1
Monmouth County 1
Other localities 7

The complete county distribution, spread across 4 New Jersey counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

New Jersey’s occurrence record for the minke whale is thin: about a dozen entries between iNaturalist and GBIF, most from the last decade. That’s a small sample for a whale that swims past the state’s coast every year, and it says more about how hard a rolling gray back is to photograph from a beach or boat than about how often the animal is actually offshore.

A whale that sticks to open water, not the bay

Every confirmed New Jersey sighting comes from the open Atlantic side of the state, off places like Sandy Hook and the barrier-island coast at Island Beach State Park, rather than from the sheltered water of Delaware Bay. That split fits the species’ biology. A minke whale is a pelagic feeder built to chase schooling fish and krill across open ocean, and it has little reason to work its way into a shallow, semi-enclosed estuary the way a bottlenose dolphin will.

Records cluster in early winter, not summer

Where many marine mammals log the bulk of their New Jersey reports in the warmer months, this species’ small pile of records tilts toward December, the same month as its most recent confirmed appearance. A handful of scattered spring and summer entries round out the rest. With only about a dozen records total, that pattern could shift with the next sighting, but for now it sets the minke whale apart from species whose New Jersey record is heaviest in summer.

Status in New Jersey

The minke whale is treated as native to New Jersey’s Atlantic waters, and the US Geological Survey’s nonindigenous species database doesn’t list it as introduced here. New Jersey has no state-level conservation rank on file for the species, so its status locally rests on the same broad Least Concern rating it carries worldwide.

Occurrence data from iNaturalist and GBIF.

More mammals in New Jersey 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
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"