The walker had to be pulled from the waterlogged mix of mud and sand by Dorset Fire Service on Friday.

BBC: Walker saved from waterlogged Swanage beach

She discovered that she could scoop handfuls of mixed sand and grain and then toss the mix out onto the water.

FORBES: The Rising Silver Tide: Aging as Counter Current to Innovation

Where there is less sand they, like Mr Serrato, can mix it into the soil, but the mixture does not hold water so well.

ECONOMIST: Honduras and Nicaragua