
There are 342 recorded sightings of Harbor Seal in Massachusetts, with 60 observations documented in the past 12 months. Local sightings are most frequently reported in January through April.
When to See Harbor Seal in Massachusetts
Most often reported in January through April.
| Month | Recorded Sightings | Peak Month |
|---|---|---|
| January | 53 | Yes |
| February | 47 | Yes |
| March | 45 | Yes |
| April | 45 | Yes |
| May | 12 | No |
| June | 0 | No |
| July | 11 | No |
| August | 0 | No |
| September | 9 | No |
| October | 17 | No |
| November | 43 | No |
| December | 41 | No |
Compared With Other Regions
Explore how Harbor Seal sightings in Massachusetts compare to other North American hubs:
A round head, a dog-like face and V-shaped nostrils distinguish this seal, and the coat is spotted gray or brown. It is found along temperate and Arctic coasts across the Northern Hemisphere, hauling out on rocks, sandbars and beaches between feeding trips for fish. Scan quiet shorelines at low tide for seals lying curved like bananas, with head and rear flippers raised.
Other Wildlife to Look for in Massachusetts
Track Harbor Seal in Massachusetts
See where Harbor Seal was reported near you — get alerts when wildlife is spotted nearby.
Frequently Asked Questions
When is the best time to see a Harbor Seal in Massachusetts?
Harbor Seal is most often reported in Massachusetts in January through April, based on GBIF records. Reports partly reflect when more people are outdoors, so sightings in other months are possible.
Where can I see a Harbor Seal in Massachusetts?
There are 342 documented Harbor Seal records in Massachusetts. Parks, refuges and protected areas with suitable habitat are the best places to start; the charts above show when it's reported most.
How can I find Harbor Seal sightings near me in Massachusetts?
Use the WildMap app on iOS to see recent reports within 100 km from the past 7 days for free (WildMap Pro: 200 km and 30 days), and turn on alerts for sightings near you in Massachusetts.

