The SheetPile Eco-Territorial Reinforcement (SPECTER) from ReefSystems can be applied on existing and new sheet pile installations to support the restoration of fragmented fish migration routes. Within the baskets of SPECTER, natural substrate can be placed for plants and other organisms to grow. Underwater SPECTER creates a green aqua wall to restore the health of ecosystems. The natural substrate and growing plants create habitats, wherein local and migrating fish can find food, shelter and a save space to reproduce. Above water SPECTER creates habitats wherein waterbirds, bees and other insects can nest. SPECTER creates a pleasant street view and have a positive environmental impact.