Plastic, the plague that haunts our marvelous oceans. Plastic makes up the majority of marine debris seen floating in the ocean or on the shorelines, especially because it is very durable and costs little to nothing to produce. Plastic is also not biodegradable, in fact, it photo degrades. With exposure from the sun’s radiation, it is continually broken down into smaller and smaller, eventually microscopic pieces. http://oceanslug.com/2014/08/01/plastic/#more-548