Signals from the sea: why sardines, jellyfish are washing ashore

Indian oil sardines are washing ashore in Kerala, Karnataka, and Goa due to marine heatwaves and El Niño. Scientists said, "Such heat induces physiological stress." Jellyfish also beached in Odisha after Cyclone Mocha, as heatwaves boosted their metabolism. These events disrupt livelihoods and ecosystems.