Dolphin deaths in South Australia spike after algal bloom decimates food sources

In 2025, South Australia saw a dramatic increase in dolphin deaths, with at least 90 carcasses washing up on beaches, marking the highest number in a decade. This spike appears linked to a severe algal bloom that decimated the dolphins' primary food sources, leading to starvation. Scientists are investigating the broader ecological impacts, including potential long-term effects on marine biodiversity and the broader food web. The situation underscores the urgent need for better environmental monitoring and response strategies to mitigate such disasters.