Marine life dying in Coorong as large tides wash in deadly algae 05/06/2025 FacebookTwitterEmail A large accumulation of dead polychaete worms along the shoreline in the Coorong North Lagoon. (Facebook/Coorong Environmental Trust) There are grave concerns for the Coorong now that it is believed the Karenia mikimotoi microalgae has entered the North […] Subscribe or Login to see the rest of the content. Username Password Remember Me Forgot Password