Most of us know what a heat wave feels like on land—sweltering heat for days. But oceans get heat waves too. When water temperature goes over a seasonal threshold for five days or more, that’s a marine heat wave. They do their worst damage in summer, when the ocean is already at its warmest, but they can occur any time of year.
Click here for original story, Marine heat waves don’t just hit coral reefs. They can cause chaos on the seafloor
Source: Phys.org