Climate crisis increasing frequency of deadly ocean upwells, study finds

Intense patches of cold water rising from the depths are killing sharks, rays and other creatures, researchers say

A climate-disrupted ocean is pushing sharks, rays and other species to flee ever-hotter water in the tropics, only for them to be killed by increasingly intense upwells of cold water from the depths, a study has found.

One of the authors of the paper described the eerie" aftermath of a mass die-off of more than 260 marine organisms from 81 species in a singular event of extreme cold upwelling off the coast of South Africa in 2021.