Thousands of fishermen from Northwest Africa, together with their families, have lost their jobs due to industrial fishing pressure, used by European countries on fishing, a tradition of many generations. The assault on the seas, which began more than two decades, has forced thousands of fishermen from northern countries to migrate to the waters of the South. Today the fishermen from Mexico, India, Senegal and Guinea Conakry who migrate north in search of other work for a living because their fishing grounds are exploited by other countries or because they do not anymore. The industrialized countries have moved to the South because their fishing capacity have found there to weak states in setting standards to protect its marine ecosystem and the economies of scale fishermen. More than half the world's population is urban, according to the UN, explains not only the abandonment of rural agricultural areas, but coastal areas of several African, Asian and Latin American. Also gives clues about the relationship that exists between what is produced in one place and consumed in another.

The welfare of humanity depends on the health of the planet, made up of water by 70%. The integration of environmental and development measures will lead to the satisfaction of basic needs, improvements in quality of life for all in ecosystems protected and better managed and more secure future and more prosperous. No nation can achieve by itself, says the preamble of the Programme of Action for the Sustainable Development of the UN. In regard to the seas, this includes awareness by governments so far have allowed or did not have the strength to stop illegal fishing.