I did already, thanks.
All you have to do is show yourself how Al foil floats in your sink. Get your kitchen foil and place a small sheet of it on the surface. Take a small piece and try to dip it in edge perpendicular. Now ball it up as best you can. You can’t easily make that foil sink.
Airfoil is very thin, and if the pieces are large enough, the surface area is good enough to help float these pieces. Barring interference by the ocean waves, other debris, animals, some things will stay on top.
Never mind the honeycomb parts inside the thin foil.
OK