  Mussel platforms are big floating structures made of wood (size is normally
about 20x20 meters or even a bit larger) that are used for aquaculture, id EST:
growing mussels in appropriate marine waters. These structures are very typical
in Galician estuaries. Being interesting to produce a periodic census of these
structures that would allow knowing their number and positions, as well as
changes on those parameters; Satellites that obtain periodic images for earth
observation are a natural election for this issue. This paper describes a
preliminary application able to construct automatically such a census using
Sentinel 2 images (Copernicus Project). Copernicus satellites are run by
European Space Agency (ESA) and the produced images are freely distributed on
the internet. Sentinel 2 images have thirteen frequency bands and are updated
each five days. In our application, we use remote sensing normalized
(differential) indexes and artificial Neural Networks applied to multiband
data. Different methods are described and tested. Finally, results are
presented.
