Colourful murals on walls, doors and the occasional fence have become a familiar sight in Sussex.

But the Victorian sewer system in Brighton and Hove has now been given a colourful make-over so workers and people who go on tours find the underground area less imposing.

Working in near darkness and using only two cans of spray paint, Brazilian Zezao took just half an hour to create his work of art.

The 35-year-old is best known for creating murals in the industrialised sewer system of his native Sao Paolo, where he developed his own distinctive style.

Southern Water allowed Zezao exclusive access to the extensive network of sewers beneath the city to create his masterpiece, which will greet those who take the water company's tours of the system.

Over the past 25 years, street art has become an increasing point of global interest and a popular form of expression in many countries. Brazil has a particularly significant scene that has influenced the urban movement from the start.

Zezao flew in from Sao Paolo especially to carry out the dark task.

He said: "I started painting murals in sewers about seven years ago. I was a street artist and found them really peaceful places to work, despite the fact it is illegal in Brazil to go into the sewers.

"I love Brighton, it is such a cool place and so different from Sao Paolo. It is important that street art like this is seen throughout the world as it has got a powerful message. It has roots in politics and is a form of expression."

The event was arranged in celebration of Cor Da Rua, an celebration of Brazilian urban art being held at the Ocontemporary (CORR) art gallery in Trafalgar Street, Brighton.

The largest show of its kind, Cor Da Rua translates as "street colour" and is a two month, 10-artist exhibition of work considered to be the most significant genre of the global urban art movement.

The exhibition runs until December 9.

For more information on the exhibition, visit www.ocontemporary.com or call 01273 698500.

Examples of Zezaoís work in Brazil can be seen at www.lost.art.br/zezao.

What is your favourite piece of street art in Sussex? Tell us below.