Scientists pinpoint algae as cause of fish deaths and surfer illnesses in South Australia.

Scientists have identified the algae species Karenia mikimotoi as the cause of recent fish deaths and health issues for surfers in South Australian waters. This toxic microalgae produces toxins that harm marine life and can cause irritation in humans. While the algae's toxins don't persist in the environment, they can reduce water oxygen levels, affecting other marine life. The discovery will help authorities manage the issue and protect local ecosystems and beachgoers.