dune

And so what this is saying is as this dune expands, new grains of sand are appearing, and each one of them is a quantum of space.

And that's when the waves will eat into the dunes and release a lot of the plastic that's been washed ashore many years ago.

I mean, the idea is, you know, you look at a sand dune and it looks smooth and continuous, but you can see individual grains of sand, right?