There's quite a lot of talk of the issue of plastic pollution in our oceans at the moment. Much talk of it breaking down in to smaller and smaller pieces but never disappearing, and the effects that has. But even before the plastic breaks down it has the potential to cause harm. In this picture (taken on the cliffs yesterday) you'll see plainly a bit of fishing line picked up and used as nesting material in this shag's nest. It could quite easily entangle or strangle the chicks at the nest even before they get to the sea. Most shag nests have similar plastic items in them. Liza.