Toxic microalgae linked to marine deaths in South Australia

A toxic microalgae has been identified as the cause of a bloom responsible for the deaths of octopus and other marine life along South Australian beaches. Environmental authorities say this bloom is linked to a "marine heatwave" and warmer-than-usual sea temperatures. The Environment Protection Authority (EPA) discovered the algae along the Fleurieu Peninsula after many dead marine creatures were found at Encounter Bay and Basham Beach. Some people who visited Waitpinga and Parsons beaches reported experiencing sore eyes, coughing, and blurry vision. As a result, the environment department closed these beaches. The EPA initially suspected a microalgal bloom but needed further testing for confirmation. Today's results revealed that the algae is toxic to fish but not harmful to humans. Environment Minister Susan Close stated that the microalgae thrived in calm sea conditions due to water temperatures being 2.5 degrees Celsius higher than normal. She added that the EPA will monitor the situation, and beaches will reopen once the bloom dissipates. David Cunliffe, the department's principal water quality adviser, highlighted that exposure could lead to allergy-like symptoms, including respiratory issues and skin irritation. However, these symptoms typically resolve with proper cleaning after exposure. He advised the public to avoid contact with discolored water and to wash off any exposure in clean water. Waitpinga and Parsons beaches will remain closed for now. Ms. Close urged people to steer clear of the water and shoreline at the affected beaches. The government noted that similar algal blooms have occurred in South Australian waters since the 1930s and have caused significant fish and shellfish deaths, with the last major event involving this type of algae happening in Coffin Bay in 2014.