Dolphins are dying in droves in the Black Sea, and Ukraine says it's evidence that Russia is committing a new kind of war crime

• Ukrainian officials have documented an uptick in dolphin and porpoise deaths near the Black Sea.
• They may use the data to build a case accusing Russia of environmental war crimes, NYT reported.
• Factors like maritime mines and pollutants from explosives likely contribute to the dolphin die-off.

As Russia's war against Ukraine rages on, Ukrainian officials have noticed an uptick in marine mammal deaths — and they want to use it as evidence to accuse Russia of ecocide and environmental war crimes.