Over 800 dolphins have died on the northern coast of Peru this year.
Authorities say that 877 dolphins have washed up in a 220-kilometer area from Punta Aguja to Lambayeque, in the north of the country, CNN reported.
"The most probable hypothesis is the possibility of an infection with a virus," Deputy Environment Minister Gabriel Quijandria said in a statement released by the Huffington Post.
According to CNN, in February, 179 dolphins washed ashore in Cape Cod, in eastern United States, according to the International Fund for Animal Welfare. Marine biologists are still trying to determine the cause of those deaths.