The authorities within the Russian province of Dagestan stated that it is nonetheless unclear what induced the animals' deaths, however they possible died of pure causes.
Regional officers initially stated Saturday that 700 useless seals had been discovered on the coast, however on Sunday Zaur Gapizov, head of the Caspian Environmental Safety Centre, stated in line with the state RIA Novosti information company that after a broader inspection of the coast the variety of useless animals was 1700.
Gapizov stated the seals possible died a few weeks in the past.
He added that there was no signal that they had been killed by poachers.
Specialists of the Federal Fisheries Company and prosecutors inspected the shoreline and picked up knowledge for laboratory analysis, which did not instantly spot any pollution.
A number of earlier incidents of mass deaths of seals had been attributed to pure causes.
The info concerning the variety of seals within the Caspian varies broadly.
The fisheries company has stated the general variety of Caspian seals is 270,000-300,000, whereas Gapizov's centre put the quantity at 70,000.