Imagine: you have travelled thousands of miles across the ocean, come to the wild, remote shores of the Arctic Ocean, disembark and find...
All the food packaging from the nearest supermarket, plastic bags, fishing net scraps, tyres and small particles of plastic. All this not only "spoils the picture" but is a real hazard. Animals, birds and fish often die if they swallow the plastic or become entangled in it.
There are invisible hazards that also accumulate in fish - heavy metals, mercury, lead - all the result of irresponsible rubbish disposal.