International audienceTo Moorish society the sea has long been a marginal world, both foreign and strange, with one notable exception: the link between imrâgen communities and the maritime space. The imrâgen immediate perception of the sea is one of intertwined natural and supernatural worlds. The details of their relation, however, are based on mechanisms that only a few insiders, custodians of the "secret of the sea" can identify and control. Some families, from Bârikalla and Buhubbayni marabout groups have managed to establish their legitimacy on the coast through the exercise of powers thought to influence the course of natural phenomena (wind, current intensity, moon phases) or the behavior of marine species (dolphins and turtles), tha...