3 Types of Seals in Massachusetts
3 types of seals have a verified observation record in Massachusetts. The most frequently recorded are Grey Seal, Harbor Seal and Harp Seal. Here is the full list, ranked by how often each is reported on iNaturalist.
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3 types of seals have a verified observation record in Massachusetts. The most frequently recorded are Grey Seal, Harbor Seal and Harp Seal. Here is the full list, ranked by how often each is reported on iNaturalist.
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Verified species, source iNaturalist
3 types of seals recorded in Massachusetts
3 seals species have a verified observation record in Massachusetts, each with at least 10 confirmed sightings. The full list, ranked by how often each is recorded, is below.
| # | Species | Scientific name | Verified records |
|---|---|---|---|
| 1 | Grey Seal | Halichoerus grypus | 2,067 |
| 2 | Harbor Seal | Phoca vitulina | 943 |
| 3 | Harp Seal | Pagophilus groenlandicus | 57 |
Plus 1 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations.
The Grey Seal (Halichoerus grypus) is the most commonly recorded, with 2,067 verified observations — about 67% of all seals reported in Massachusetts. If you spot a seal here, it is statistically most likely to be this one.