Alaska mammals

Humpback Whale in Alaska

Megaptera novaeangliae

Native to Alaska S3 Vulnerable in Alaska

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

Humpback Whale in Alaska, by the numbers

Common in Alaska 14th most recorded of 108 mammals logged in Alaska

3,321 occurrence records
3,262 with iNaturalist photos
Jul 12, 2026 Last seen in Alaska

Records from 2000–2026.

3,321 total records count every Alaska occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 3,193 records with a full observation date.

When to look for the Humpback Whale in Alaska

Most sightings fall in June to August.

3,193 Alaska occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Alaska records (table)
MonthRecords
January15
February17
March77
April59
May397
June721
July890
August610
September307
October48
November41
December11

Monthly humpback whale occurrence records (iNaturalist and GBIF) in Alaska, 2000–2026.

Seasonality

Year-round in Alaska, with recorded sightings peaking in June–August.

Occurrence map

Where Humpback Whale has been recorded in Alaska

300 records mapped · zoom and drag to explore

300 Alaska records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Glacier Bay National Park 89
Tongass National Forest 20
Shelter Island State Marine Park 19
Kenai Fjords National Park 7
Bering Sea Wilderness Area 4
Mendenhall Wetlands State Game Refuge 3
South Esther Island State Marine Park 2
Alaska Peninsula National Wildlife Refuge 2

Protected places with the most humpback 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 Alaska

CountyRecords
Juneau County 746
Kenai Peninsula County 188
Sitka County 142
Hoonah-Angoon County 80
Valdez-Cordova County 30
Haines County 24
Ketchikan Gateway County 18
Petersburg County 17
Prince of Wales-Hyder County 16
Skagway County 15
Aleutians West County 13
Anchorage County 5
6 other counties 2,027

The complete county distribution, spread across 18 Alaska counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Alaska carries some of the densest humpback whale records anywhere in the country, concentrated around Kenai Fjords National Park, Glacier Bay National Park and Preserve, and the Inside Passage waters of Tongass National Forest. These fjords and channels are prime summer feeding ground, not breeding habitat. The whales have already calved far south, mostly around Hawaii, months before they arrive.

Humpbacks feeding in Alaska waters hunt krill and small schooling fish like herring, capelin, and pollock, often working in groups to drive fish into tight balls near the surface before lunging through them. It’s a very different hunting style from the tooth-based approach orcas use along the same coast.

Records climb through spring and peak from June through August, tracking the whales’ arrival to feed after the winter breeding season, then thin out as animals head back south in fall. Records this dense mostly reflect heavy boat traffic and research effort in these waters, alongside a genuinely large recovered population along the whole US coast.

Occurrence data from iNaturalist and GBIF.

Humpback Whale in other states

More mammals in Alaska 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"