The boy from the Congo, called Samuel, was found dead on the beach of Canos de Meca, in Barbate
The child, from the Congo, named Samuel, was found dead on the beach of Canos de Meca, in Barbate, in the southern Spanish province of Cadiz, in the Andalusia region.
He was travelling along with his brothers to Europe in a bid to reach his father.
But the tragedy that unfolded has alarming echoes of Aylan, the three-year-old Kurdish boy whose dead body was photographed in the arms of a rescuer on a beach.
His death became a worldwide symbol of the refugees fleeing war zones only to lose their lives on the way to Europe.
In this latest incident Samuel was not photographed.
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The child was one of 21 migrants travelling in two rubber "patera" boats – small boats used by migrants to cross the Strait of Gibraltar – when they sank.
Local villages spotted his lifeless body on the shores.
His mother Veronica's body was found days later on the beach of Bolonia, near the city of Tarifa, also in Andalusia.
Two more children died over the weekend as they attempted to cross the treacherous Central Mediterranean between Libya and Italy with their siblings.
Teresa Mira, spokeswoman for the Association For Human Rights In Andalucia, has called on the Spanish government to end its "bad migrant politics and these unfair things".
His body was found here in Canos de Meca, in Barbate, in the southern Spanish province of Cadiz
She said: "Samuel, as well as Aylan, had a migrant plan in order to have a better life, but unfortunately everything went wrong."
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Miguel Molina, the mayor of Barbate, said: "Sometimes we should give victims' name and surnames in order to be aware of that we are talking about human lives.
"We have to stop these tragedies."
He also pointed out that Barbate, along with other southern coastal Spanish cities, is on the front line of the migration tragedy as many migrants arrive there from Morocco.
In front of the city council, residents of Barbate protested against the migrant politics in the country and in Europe, as well as showing their outrage at the death of the innocent six year old boy who wanted to cross the strait.
The tragedy has alarming echoes of the death of Aylan Kurdi found dead on a beach
During the protest, the mayor said: "We do not want more migrants risking their lives, here in our waters or wherever, just because they want to search a better life for the lack of an answer by the international community to these kinds of cases.
"We want to say 'enough' to those backward politicians who block the foster care of those people from different countries."
Both the mayor and members of the association wondered how they were not informed about the case of Samuel and the appearance of the body on the beach, doubting if authorities wanted to hide the case.
However, the sub delegate of the government in Cadiz, Agustin Munoz, denied it, saying that "the finding of the body was informed in a local event with local media".
According to the human rights association, 300 people disappeared in 2016 while trying to get to Spain. In 2016, the number of pateras doubled compared to 2015.
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