5 Types of Jellyfishes in Alaska
5 types of jellyfishes from true jellyfish (class Scyphozoa) have a verified observation record in Alaska. The most frequently recorded are Pacific Lion's Mane Jelly, Northern Sea Nettle and Greater Moon Jelly. Here is the full list, ranked by how often each is reported on iNaturalist.
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5 types of jellyfishes from true jellyfish (class Scyphozoa) have a verified observation record in Alaska. The most frequently recorded are Pacific Lion's Mane Jelly, Northern Sea Nettle and Greater Moon Jelly. Here is the full list, ranked by how often each is reported on iNaturalist.
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Real sighting data, source iNaturalist
1,741 verified observations on iNaturalist of jellyfish have been recorded in Alaska, most often in August, July, June.
| Species recorded in Alaska | Verified observations |
|---|---|
| Pacific Lion's Mane Jelly | 736 |
| Northern Sea Nettle | 536 |
| Greater Moon Jelly | 283 |
| Egg-yolk Jelly | 31 |
| Brown-rimmed Moon Jelly | 16 |
Verified species, source iNaturalist
5 types of jellyfishes recorded in Alaska
5 jellyfishes species have a verified observation record in Alaska across true jellyfish (class Scyphozoa), 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 | Pacific Lion's Mane Jelly | Cyanea ferruginea | 739 |
| 2 | Northern Sea Nettle | Chrysaora melanaster | 536 |
| 3 | Greater Moon Jelly | Aurelia labiata | 283 |
| 4 | Egg-yolk Jelly | Phacellophora camtschatica | 31 |
| 5 | Brown-rimmed Moon Jelly | Aurelia limbata | 16 |
Plus 1 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations.
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The Pacific Lion's Mane Jelly (Cyanea ferruginea) is the most commonly recorded, with 739 verified observations — about 46% of all jellyfishes reported in Alaska. If you spot a jellyfishe here, it is statistically most likely to be this one.
Alaska also hosts less common jellyfishes such as Egg-yolk Jelly and Brown-rimmed Moon Jelly, each recorded fewer than 100 times. These are the species worth a second look when you are out, since a sighting is more notable.