A floating structure comprising floating, modular, parallelepipedic blocks whose vertical edges are provided with lugs in which connecting elements are inserted in order to assemble the blocks. The connecting elements entail a support key, which at its upper part bears stanchion extending above upper surface of the floating structure, the stanchion being provided with an eyelet capable of constituting a point of attachment for net. One or more anchoring points are situated below and to the interior of the floating structure. Also disclosed are applications of the floating structures, including as anti-pollution barriers.
