A simulated coral reef comprising a polymer matrix body comprised of sheets of permeable and porous nonwoven polymer fiber matting, outwardly extending deployment connectors, and anchor connectors that connect the matrix body to an anchor assembly. A simulated coral reef comprising pieces of polymer matrix and/or permeable bag units strung together vertically by a connecting rod attached to an anchor assembly. A simulated coral reef comprising pieces of polymer matrix, permeable bag units, and surface attachment structures in which the pieces of polymer matrix and permeable bag units are attached to the surface attachment structures by a connecting cable. A simulated coral reef comprising a weed blanket fully submerged in a water body and suspended over the bottom of the water body. A simulated coral reef comprising hanging curtains suspended from asurface attachment structure. A simulated coral reef comprising sheets of permeable polymer matrix attached to a rigid metal frame.
