The spike in dolphin deaths was blamed on Putin's invasion ofUkraine.
There are burn marks from bombs on the coastline of the Black Sea where dolphins are washing up.
Ivan Rusev, the research director at the Tuzla Estuaries National Nature Park, has been documenting the 101 days of the war on his Facebook page in order to raise awareness of the ecological effects of the invasion.
According to Rusev, dolphins are washing up on shore with burns from bombs and mines, and showing signs of not eating for days.
Several thousand dolphins have already died, according to the ecologist.
Rusev wrote that barbarians kill smart dolphins.
The Turkish Marine Research Foundation reported that the war is having a negative effect on the marine environment.
The research foundation highlighted the "crisis in biodiversity" caused by the war. The feeding grounds for fish and dolphins were transformed into a maritime war zone as a result of the destruction of red algae.
Oil and gas can leak into the sea from sunken military ships.
The number of dolphins in the Black Sea, Mediterranean Sea, and contiguous Atlantic Sea was determined by 100 scientists before the war.
According to the New York Times, dolphins live in the Black Sea and this is a sign of a well- functioning ecological system.
It's not known how many of the quarter of a million dolphins will survive the war.