Hmmm, great idea. Releasing an aggressive microbe to colonise all the world's oceans. Okay, it might eat plastic, but what else have they tested it on? Toenails? Seahorses? Ships hulls?I wonder what the hydrocarbon chains will be broken down into? That should make some of the lunatic fringe confused, breaking down plastic is good but making carbon dioxide is bad.
Things like this really could be the cause of an extinction.