This happens to fish when a Volcano explodes underwater 
By Mark Collins SP Source: news4jax 1/18/2023
Mark Collins
Credit: doi.org/10.3389/fmars.2022.999816
Two volcanic eruptions in the Canary Islands have shown researchers what impacts they have on fish.

It’s long been known water doesn’t buffer the extreme destruction around marine life much when a volcano explodes.
 

Even the deep waters were not safe when fish floated up by lava flowing into the sea from Hawaii’s Mauna Loa volcano. The famous ichthyologist David Starr Jordan, the original president of Stanford University, described the island’s first documented volcanic fish kill in 1921.

 
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