Toxins in the 2025-2026 South Australian harmful algal bloom
Since the middle of March 2025, South Australian coasts have been afflicted by a toxic algal bloom of unprecedented size and duration. The effects of the bloom on marine life have been devastating, with untold thousands of dead creatures, from tiny worms to large sharks, washing up on the beaches from Encounter Bay and Kangaroo Island to shores on both sides of Gulf St Vincent. Underwater surveys indicate that mortalities seen on the beaches are only a small fraction of what is happening off-shore.
As the bloom has progressed, various citizen science groups, independent researchers, university researchers and government departments have been working to monitor and understand the genesis, progression and effects of the toxic algal bloom. As a result of my background in zoology, comparative anatomy and physiology, pharmacology, and both cellular and systems neuroscience, it turns out that I am one of the few people around who has significant background knowledge of how the various algal toxins affect different cell types and organ systems is a wide range of marine creatures. Consequently, I have contributed directly to several citizen science projects and have spoken about the toxins at public forums.
Based on the talks I have given at … Click here for more.














