Al Jazeera, 02/09/2012
There is a unique commerce system at work along the narrowest stretch of the Tajaparu River in Amazonia, northern Brazil.
This is where the boats pass close to the shore and it is the best place for the small canoes selling sweets and jams to do their business.
The children who operate the canoes weave in and out among the boats, shouting directions and warnings to one another as the propellers of ferries churn just below them. They then climb aboard in a bid to sell their wares to the ferry passengers.