It's called a 'La Plata river dolphin' and it was 7 days old when it was rescued in Uruguay with injuries from a fishing net. I read somewhere that it still had it's umbimical cord attached when rescuers found it. Poor little guy eventually died from hypothermia and respiratory failure. They had named him Nipper.
This video appears to have been removed
"Do not go where the path may lead, go instead where there is no path and leave a trail."