7 Types of Jellyfishes in Delaware
7 types of jellyfishes from true jellyfish (class Scyphozoa) have a verified observation record in Delaware. The most frequently recorded are Bay Nettle, Dwarf Lion's Mane Jelly and Mushroom Jelly. Here is the full list, ranked by how often each is reported on iNaturalist.
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7 types of jellyfishes from true jellyfish (class Scyphozoa) have a verified observation record in Delaware. The most frequently recorded are Bay Nettle, Dwarf Lion's Mane Jelly and Mushroom Jelly. Here is the full list, ranked by how often each is reported on iNaturalist.
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Real sighting data, source iNaturalist
567 verified observations on iNaturalist of jellyfish have been recorded in Delaware, most often in July, August, September.
| Species recorded in Delaware | Verified observations |
|---|---|
| Bay Nettle | 103 |
| Dwarf Lion's Mane Jelly | 78 |
| Mushroom Jelly | 45 |
| Common Moon Jelly | 32 |
| Southern Moon Jelly | 31 |
Verified species, source iNaturalist
7 types of jellyfishes recorded in Delaware
7 jellyfishes species have a verified observation record in Delaware 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 | Bay Nettle | Chrysaora chesapeakei | 103 |
| 2 | Dwarf Lion's Mane Jelly | Cyanea versicolor | 78 |
| 3 | Mushroom Jelly | Rhopilema verrilli | 45 |
| 4 | Common Moon Jelly | Aurelia aurita | 32 |
| 5 | Southern Moon Jelly | Aurelia marginalis | 31 |
| 6 | Cannonball Jelly | Stomolophus meleagris | 23 |
| 7 | Atlantic Sea Nettle | Chrysaora quinquecirrha | 22 |
Plus 2 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations.
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Top Delaware Jellyfish Gifts
The Bay Nettle (Chrysaora chesapeakei) is the most commonly recorded, with 103 verified observations — about 31% of all jellyfishes reported in Delaware. If you spot a jellyfishe here, it is statistically most likely to be this one.
Delaware also hosts less common jellyfishes such as Dwarf Lion's Mane Jelly, Mushroom Jelly and Common 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.