Could recycle plastic into floating kelp forests that consist of a weighted substrate that the kelp holdfasts can lock onto supported at the appropriate depth u

Could recycle plastic into floating kelp forests that consist of a weighted substrate that the kelp holdfasts can lock onto supported at the appropriate depth using lines up to floats. Each deployment could be of sufficient area to be self-sustaining in the open ocean and populated with appropriate fauna. If the floats degrade the entire forest would sink to the seafloor to sequestrate the carbon. Gradually these would congregate in the gyres in the oceans where all the loose plastic ends up and eventually take it all to the bottom.