Microalgae bloom linked to fish deaths at Waitpinga Beach

Environmental authorities in South Australia are investigating fish deaths and the presence of foam at Waitpinga Beach. They believe a microalgae bloom may be responsible. Over the weekend, many dead octopuses and other marine creatures washed ashore at Encounter Bay and Basham Beach. Visitors to Waitpinga and Parsons beaches experienced health issues like sore eyes and coughing after their visits. As a result, the environment department closed both beaches on Monday. The Department of Primary Industries and Regions (PIRSA) reported dead fish along the coastline from Parsons Beach to Basham Beach, indicating a widespread event. Sam Gaylard, a marine scientist at the Environment Protection Authority (EPA) South Australia, stated that the hot weather and calm waters created ideal conditions for the algae bloom. While isolated blooms are common in this season, this situation is unusual. The algae is impacting local fish and swimmers. Mr. Gaylard noted that the dead fish appear to be reef-associated, likely living near Waitpinga and Parsons. The increase in swell may have broken up the algae, leading to the foam seen on the beaches. There's concern that the algae issue could spread but hopes are that changing weather conditions will help disperse it. PIRSA and the EPA have sent teams to collect water samples for testing. Results are expected within a week to confirm the type of algae involved. Depending on its nature, the microalgae could be harmful to marine life either through toxins or oxygen depletion. Local health officials have not reported any hospital cases linked to the algae. Meanwhile, residents are urged to avoid affected beaches and report any unusual marine life to the FISHWATCH hotline.