Marta Lourenço MUHNAC - National Natural History Museum director talks with Ricardo Gomes about his motivation to do the films. Ricardo Gomes is a biologist, CEO of Instituto Mar Urbano who filmed for a decade Guanabara bay in Brasil with the support of a local fisherman. His film about Guanabara bay show how much resilient marine life can be and won a UN award. Recently he did a film about Urban Rivers in Portugal beginning by rivers Tejo and Sado.