The world’s oceans experienced three-and-a-half times as many marine heatwave days last year and in 2023 compared with any other year on record. The sustained spike in ocean temperatures cost lives and caused billions of dollars in storm damage, increased whale and dolphin stranding risks, harmed commercial fishing and sparked a global coral bleaching. The more regularly marine ecosystems are hit by marine heatwaves, the harder it is for them to recover from each event.
www.theguardian.com/environment/2025/feb/28/surge-in-marine-heatwaves-record-temperatures-costs-lives-and-billions-in-storm-damage-study