A buoyant walkway or island and its method of manufacture. In a preferred embodiment, the buoyant walkway comprising: an internal frame comprising semi-rigid members that are attached to one another, said internal semi-rigid frame having openings an internal block disposed in each of said openings, said internal blocks being spaced apart from one another by gaps and forming a top surface and a bottom surface cured thermoplastic foam disposed in said gaps that attach said internal blocks to said semi-rigid internal frame and to one another a permeable top layer that is attached to said top surface and a bottom layer that is attached to said bottom surface.