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| Title | Date of sighting | reporter | Image | Lat / Lng | Description | Type of organism | Other type |
|---|---|---|---|---|---|---|---|
| Santa Barbara… | Miramar ragamuffin | 34.420 / -119.610 | small, clear, perfectly round, marble sized balls with tw |
Other | ctenophore | ||
| Santa Barbara… | Miramar ragamuffin | 34.420 / -119.640 | Miniature Velella? Hammond's beach. |
Jellyfish | |||
| Santa Cruz… | Jellywatcher | 36.970 / -122.120 | Hundreds of velellas washed up at four mile beach in Sant |
Velella | |||
| Santa Cruz CA… | Jellywatcher | 
|
36.970 / -122.030 | We saw thousands tonight around 7pm PST at Twin Lakes Bea |
Velella | ||
| Santa Cruz… | Miramar ragamuffin | 34.060 / -119.830 | siphonophores at Painted Cave seen from whale watching ve |
Jellyfish | |||
| Santa Cruz… | Jellywatcher | 
|
36.960 / -122.000 | Windrows of Velella on the beach, reported by M. |
Velella | Velella | |
| Santa Monica… | Jellywatcher | 
|
34.010 / -118.500 | A lot on the shore |
Velella | ||
| Santa Monica… | Jellywatcher | 
|
34.040 / -118.540 | Dozens of 2-3 inch velella with the sails. |
Velella | ||
| Santa Teresa… | Jellywatcher | 41.240 / 9.190 | Hundreds of Pelagia Noctiluca |
Jellyfish | |||
| Sarah creek | Jellywatcher | 37.260 / -76.460 | Sea nettles have arrived in Sarah creek. |
Jellyfish | |||
| Sardaigne | mobile_jellywatcher | 
|
40.270 / 9.630 | Brown jelly. |
Jellyfish | ||
| Sardinia,… | Jellywatcher | 
|
41.000 / 9.000 | A lot of jellyfish seen in La Maddalena, sardinia's |
Jellyfish | ||
| Sargassum in… | mbt | 
|
11.300 / -60.530 | Huge washup of Sargassum in a bay on Tobago |
Red Tide | Sargassum | |
| Sargassum on… | Elizabeth Eubanks | 
|
26.610 / -80.040 | So much sargassum on beach and floating patties in water. |
Other | Sargassum | |
| Satellite… | Jellywatcher | 28.210 / -80.600 | Round circular jellyfish like organism with blue ring aro |
Velella | |||
| Satellite… | Jellywatcher | 
|
28.210 / -80.600 | Round circular jellyfish like organism with blue ring aro |
Velella | ||
| Satellite… | Jellywatcher | 27.860 / -80.490 | Blue Velellas: 'By the Wind Sailors' scattered |
Velella | Velella | ||
| Saturday at 12… | mobile_jellywatcher | 
|
32.120 / 34.780 | Clean sea | Good day for swimming | ||
| sausalito, ca… | Jellywatcher | 37.880 / -122.490 | i live on my boat in richardson bay, i have seen about 12 |
Jellyfish | |||
| Saw a few in… | Jellywatcher | 38.810 / -76.120 | Scattered Crysaora seen |
Jellyfish | |||
| Saw a jelly | Jellywatcher | 44.310 / -124.100 | I saw a jellyfish on the shore in Yachats Oregon |
Jellyfish | |||
| Saw dead jelly… | Jellywatcher | 
|
45.880 / -123.970 | I'm not sure what kind it is, but it washed up on cannon |
Jellyfish | ||
| Saw dozens of… | Jellywatcher | 51.590 / -3.520 | We saw many different types of jellyfish ranging from sma |
Jellyfish | |||
| Saw peices | Jellywatcher | 
|
33.540 / -117.790 | I saw many almost whole and smaller peice of them off the |
Velella | ||
| Saw several of… | mobile_jellywatcher | 
|
34.030 / -77.900 | Man o war |