The wreck of a WWII german submarine was found off the coast of Buenos Aires Argentina.
www.lanacion.com.ar
There is still no confirmation that the wreck is a submarine, however everything points to it.
The wreck site coordinates are still not published, however news reported that the wreck is 4 km from the coast and at a depth of 28 meters. Visibility is always poor, so videos are not good. The site is still not open to divers.
At least 2 german submarines surrendered in the port of Mar del Plata in Buenos Aires in July and August 1945, so, the presence of german submarines in the South Atlantic is a fact.

Misterio en Necochea: hallan un elemento clave que confirmaría que la nave hundida es un submarino nazi
Los investigadores revelaron en exclusiva a LA NACION que detectaron otro pecio hasta ahora desconocido que confirmaría que la nave hundida a 28 metros de profundidad y a 4 kilómetros de la costa argentina es un submarino alemán

The wreck site coordinates are still not published, however news reported that the wreck is 4 km from the coast and at a depth of 28 meters. Visibility is always poor, so videos are not good. The site is still not open to divers.
At least 2 german submarines surrendered in the port of Mar del Plata in Buenos Aires in July and August 1945, so, the presence of german submarines in the South Atlantic is a fact.