Algal Bloom

General Information and Health Advice

An ongoing marine algal bloom, primarily composed of the Karenia species, is affecting parts of the coastline and having a devastating impact on sea creatures.

• Human Health Impact: The risk to human health is generally considered low. The algae can, however, cause short-term irritation if there is direct contact with discoloured or foamy water.
• Symptoms: Contact with the bloom can lead to skin irritation, eye irritation, coughing, and shortness of breath.  These symptoms usually resolve within a few hours of leaving the affected area.
• Vulnerable Groups: People with asthma or other chronic lung diseases (such as emphysema or bronchitis) are more vulnerable.  They are advised to carry their reliever medication and avoid areas with thick, visible foam or discoloured water.
• Official Guidance: SA Health advises that beaches are still safe to visit, but people should avoid entering water that is visibly discoloured or foamy.  Rinsing off with clean water after any contact is also recommended.

Impact on Surf Lessons and Coastal Regions

• Monitoring Conditions: The bloom’s movement is dynamic and dependent on wind direction, swell strength, and other environmental factors.  This makes it difficult to predict its location far in advance, confirming the need for constant monitoring of local conditions.
• Regional Differences: The Mid Coast region (Moana to Southport) is more impacted, at present, than the South Coast region (Middleton to Goolwa)
• Safety Protocol: The decision not to run sessions in areas with algae foam or discoloration is the primary safety measure recommended by health authorities. Relocating lessons to the least impacted region on a given day is an effective way to prioritize participant safety and ensure a positive experience.
• Surf-Specific Impact: Reports from surfers in South Australia have noted that they have experienced minor flu-like symptoms, scratchy throats, and itchy eyes after surfing in affected waters.  This reinforces the importance of avoiding visible patches of the bloom.

Please refer to the SA Government website for all information and updates about the Algal Bloom situation. Here’s the link: