400 carcases found in single month on beach in Lambayeque region where more than 800 washed up in whole of 2012
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/mass-dolphin-deaths-peru
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/guardian-uk
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dolphin
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fish
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/peru
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/marine-life