| Event name: | AU-25-001 | |
| Country: | AUSTRALIA | |
|
Nature of the harmful event: |
Water Discoloration , High Phyto concentration , Seafood toxins , Mass mortalities , Foam/Mucilage in the coast | |
|
Event directly affected: |
Planktonic life , Natural Fish , Birds , Aquaculture Fish , Shellfish , Aquatic Mammals , Humans | |
| Toxicity detected: | Yes | |
| Associated syndrome: | NSP , Aerosolized toxins effects | |
| Unexplained toxicity: | ||
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | No | |
| Event occurred before in this location: | ||
| Individuals to contact: | Hallegraeff Gustaaf | |
| Location: | Latitude: , Longitude: | |
| General location information: |
AU-03, Waitpinga Beach HAB Area code(s): AU-03 |
|
| Additional location information: | Similar problems were aldso reported from South Australia at Boatswain Point (21 March 2025) and Kangaroo Island (1 April 2025) | |
| Bloom event dates (yyyy/mm/dd): | Start: 2025-03-17, End: 2025-09-01 | |
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Karenia mikimotoi
(3000000 cells/L)
Karenia brevisulcata (Chang) Hansen et Moestrup 2000 ( cells/L) Karenia spp. ( cells/L) |
|
| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | 16 µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | Numerous press releases, tv panels etc | |
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: 24 °C, Min: 18 °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: | Whole column | |||||||||||||||||||||||||
| Growth: | ||||||||||||||||||||||||||
| Growth Comments | yellowish foam stretching for hundreds of meters along Waitpinga Beach, 15 km sw of Victoria Harbour | |||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: | Type of kit used: | ||||||||||||||||
| Additional information: | underway | ||||||||||||||||
| Economic losses: | to be assessed | ||||||||||||||||
| Management decision: | several beaches were closed; shellfish industry closed | ||||||||||||||||
| Additional harmful effect information: | beachgoers and surfers reported coughing, cold and flu-like symptoms. Mass marine mortality of a broad range of 400 species including seadragons, sharks, fish, dolphins, octopus | ||||||||||||||||
