child barely visible under the water in a swimming pool has acted as stark warning to parents. The picture appears to show an empty swimming pool with glistening blue water.However a more detailed looks shows a vague shadow beneath the water which is a child who is laying at the bottom of the pool, barely visible on initially glances.The child is wearing pale blue shorts and is swimming near the bottom of the pool but because of the colour of his swim shorts, he is barely visible.