Floating Pennies
If you stare into this pond or stream you may notice lots of leaves and debris floating above the surface, but if you look closely you may notice a few pennies. The two pennies are just floating around the pond as if they were as thin and light as a leaf. Now how the heck do u suppose these pennies get to float instead of sink?
Thin ice pallets that are barely visible are keeping the pennies afloat.