Marine heatwaves pose a growing threat to human health

Marine heatwaves are increasingly being linked to direct impacts on people, not just ecosystems, according to a new paper highlighted by researchers. Led by Dr. Laura Falkenberg at Adelaide University and Dr. Bayden Russell at the University of Hong Kong, the study argues that extreme ocean warming can intensify storms, affect the safety and availability of seafood, disrupt livelihoods, and contribute to anxiety and other mental health harms in coastal communities. The report points to 2023 events, including Hurricane Otis in Mexico and Typhoon Doksuri across East and Southeast Asia, where marine heatwaves helped boost intensity. It also cites health concerns tied to algal blooms in South Australia and notes that heat-related seafood risks and aquaculture losses are emerging in regions including the Mediterranean and the Gulf of Thailand.