A marine heat wave is a string of five or more days in which ocean water temperatures are in the top 10% compared with the previous three decades.
They are becoming more frequent due to climate change, and are damaging our aquatic ecosystems. Marine heatwaves are far less researched than heatwaves on land.
Marine heat waves are caused by short term events like like El Niño storms, and longer term changes like climate change.
pathways:
30.07.2022 / Reuters / High temperatures unleash marine heatwave in Mediterranean Sea
25.07.2022 / HAARETZ / Heat Waves in Mediterranean Caused Mass Die-offs of Marine Life