The quotes in this morning’s Post are straight out of a schlocky horror movie: “You prevent the spread for as long as you can, and then you just suck it up.” Zombies? Aliens? C.H.U.D.s? Oh, no, it’s zebra mussels, pesky little creatures that invade freshwater bodies and generally cause chaos. The mussels — considered the roaches of the sea, as they feed on detritus — vex everything that uses the water: their sharp shells cut swimmers’ feet and damage boats, while power plants and water treatment plants usually need to spend a whole bunch of money to clear them from pipes. Having toted over here on Eastern European ships in the 1980s like a modern-day version of rats, the mussels have most recently caused a ruckus in the Great Lakes, costing millions of dollars in damage — and now, they are working their way down the Susquehanna River to the Chesapeake Bay. They breed rapidly, can slip through dams, and there’s not much that can really be done to stop them. As a associate director at the Maryland Department of Natural Resources notes: “I’m knocking on wood that we don’t have a zillion of them by fall.” I’d tell you to aim for the head, but they don’t have one.