HomeScienceScientists identified new algae species fueling Australia’s deadly ocean bloom

Scientists identified new algae species fueling Australia’s deadly ocean bloom

Scientists have traced Australia’s unprecedented toxic algal bloom to a surprising species producing potent neurotoxins, reshaping understanding of the marine crisis and its climate-driven roots.

November 20, 2025 / 16:12 IST
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Foam from an algal bloom has been washing up on beaches in South Australia (Image: Canva)
Foam from an algal bloom has been washing up on beaches in South Australia (Image: Canva)

Australia is battling an unprecedented toxic algal bloom. The scientists have now uncovered a surprising culprit driving its deadly impact. A little-known algae species is producing powerful neurotoxins. This is reshaping the understanding of the marine disaster.

A Hidden Culprit Emerges

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Scientists investigating Australia’s massive toxic bloom have identified the unexpected species Karenia cristata. The alga was not previously known to dominate Australian waters. Its role in producing potent toxins has stunned researchers. The discovery forces a rethink of harmful bloom dynamics. The event now appears more complex than initially believed.

Potent Toxins Threaten Marine Life