This page shows a table of sightings. If you select sorting and filter options, the results will be limited to those which match

To download sightings in tabular format, configure the filter options, then click the CSV button at the bottom of the page. If you intend to derive work from the data, or to publish it, please acknowledge, and let us know what you are up to.

Title Date of sighting reporter Image Lat / Lng Description Type of organism Other type
Box jelly at Mackay… jellywatch -21.130 / 149.230

from a net tow

Box Jelly
Chrysaora, Monterey Bay… leannedfoster Alt text 36.640 / -121.890

Very poor viz this day.

Physalia from Gorgona Cristina Cedeño Alt text 2.990 / -78.200

Reported By: Edgardo Londoño, Universidad del Valle (Univ

Man o war
Wilson's Prom 8th… Jellywatcher -38.990 / 146.390

There were a few bright sparks in the water which seemed

Red Tide phosphorescent plankton
Box jellies in Hanauma… beroe 21.270 / -157.690

Lifeguards closed the bay due to box jellies, Feb 7 to 8t

Box Jelly
Melibe leonina Leo 48.540 / -123.010

25 Melibe leonina nudibranchs seen swimming in the upper

Other Mollusc: Gastropod: Nudibranch
Chrysaora in Monterey Bay… leannedfoster Alt text 36.640 / -121.890

Another large grouping of sea nettles from surface to 50

30 Jan_Reunion Rocks Jellywatcher Alt text -29.990 / 30.960

3 Jellies (Rhizostoma sp.) washed ashore just south of Du

Chrysaora in Monterey Bay… leannedfoster 36.640 / -121.890

Pinnacle 65 to 105 feet.

Chrysaora fuscescens… Abreojos 36.820 / -121.940 Jellyfish
Box jellies in Hanauma… beroe 21.270 / -157.690

This is the monthly predicted bloom.

Box Jelly
Chrysaora in Monterey Bay… leannedfoster 36.640 / -121.890

Large grouping of Sea Nettles from surface to 50 foot dep

Chrysaora fuscescens… Abreojos 36.870 / -121.900 Jellyfish
Physalia in Australia jellywatch Alt text -26.810 / 153.140

Hundreds brought in by easterly winds

Man o war
Jellyfish in Southern… jellywatch -40.550 / -73.730

no description of species, but produces painful sting.

Ouch Jellywatcher 21.320 / -157.670

I was out surfing at "Cockroach", when one wrap

Man o war man o war
Melibe leonina swimming… Leo 48.540 / -123.010

There have been lots of Melibe swimming in the nearshore

Other Mollusc: Gastropod: Nudibranch
Small ctenophore? Jellywatcher 20.410 / -87.300

I was in the Yal Ku lagoon in Akumal, Mexico and saw a ve

Other Ctenophore
Portuguese man o'… acmorand Alt text -23.990 / -46.230

Portuguese man o' war stranded in beaches of Santos

Man o war
Jellyfish swarm into… Wendy Matthews Alt text -36.880 / 175.040

Jellies littered the beach and many were still swimming u

Portuguese Man-of-War at… ottompo Alt text -23.830 / -45.420

Many Portuguese man-of-war were observed at the São Sebas

Man o war Portuguese man-of-war
Box jellies in Waikiki… Jellywatcher 21.270 / -157.830

Reports later said fewer than normal

Box Jelly
Red tide in Monterey Bay… Jellywatcher 36.800 / -121.870

Brown water for 10 miles offshore, for the last month at

Red Tide
Cotylorhiza near Malta… jellywatch 36.030 / 14.210

Cotylorhiza tuberculata, Said to be "dozens" in Xlendi Ba

Tripedalia cystophora eorellana 26.370 / -80.070

The Box Jellyfish Tripedalia cystophora was first offical

Box Jelly