Polystein

“Microbeads and fragments that fish eat typically pass through their bodies and are excreted. But [microplastic] fibres are becoming enmeshed in gastrointestinal tracts of some fish. … There is also a chance that fibres are in drinking water piped from the lakes. … Two dozen varieties of German beer contained microplastics.” (http://www.theguardian.com/environment/2015/jan/09/great-lakes-plastic-microfibre-pollution-us)

A pint of your finest plastener lager, or Lego Brecks, if you please.

Plostic

“More than 5 trillion plastic pieces, with a combined mass of more than 250,000 tonnes, are floating in the ocean. … Large items such as bottles, buoys and plastic bags would be expected to degrade into smaller and smaller pieces of floating trash. So where is all the microplastic? … Polymer chemists say that all the plastic we have ever made is still with us.” (http://www.nature.com/news/fate-of-ocean-plastic-remains-a-mystery-1.16508)

Obviously, pollution-evolved creatures of the depths are constructing Lego-like weapons of mass destruction.