What's Happening?
In 2025 and 2026, South Australia experienced a significant harmful algal bloom, leading to an unprecedented number of dolphin deaths, marking the highest fatalities in over a decade. Citizen scientists documented over 123,000 observations of marine life
during this period. The algal bloom not only affected marine life but also caused respiratory issues and eye irritation for beachgoers due to the sea spray. This ecological event has raised concerns about the long-term health of marine ecosystems in the region.
Why It's Important?
The harmful algal bloom in South Australia highlights the vulnerability of marine ecosystems to environmental changes. Such events can have cascading effects on biodiversity, impacting not only marine life but also human health and local economies dependent on tourism and fishing. The situation underscores the need for increased monitoring and research to understand and mitigate the impacts of algal blooms. It also emphasizes the role of citizen scientists in providing valuable data that can aid in environmental conservation efforts.











