Whale deaths reported in Argentine Patagonia

A significant number of southern right whales have died off the coasts of Península Valdés and Puerto Madryn in Argentine Patagonia. Reports indicate a record loss of more than 340 calves in the Nuevo and San José gulfs, representing over 70 percent of the calves counted this season. Recent strandings of adults and juveniles have also been recorded.

Scientists and the Whale Conservation Institute (ICB) are investigating the causes. Preliminary findings suggest that calves may have died from a marine bacterial infection, specifically Erysipelothrix rhusiopathiae, which is associated with septicemia. For the larger whales, researchers are considering 'red tides'—harmful algal blooms that produce natural biotoxins—as a primary hypothesis.

Greenpeace Argentina has expressed concern regarding human and industrial pressures on the Argentine Sea. The organization highlighted threats such as seismic exploration for hydrocarbons, increased maritime traffic, and the risk of offshore oil spills, calling for the protection of critical migratory and feeding routes.