Concerned about the real-life toxicity of Maryland's Chesapeake Bay and using a grab bag of clever found-footage-style imagery, Barry Levinson has made one hell of a creepy little eco-horror pic. One minute, folks are splashing around the Maryland shoreline; the next, they're ravaged (in gruesome detail) by hideous parasitic isopods that have evolved in polluted water. Chaos follows. And if the filmmaker has his way, so will action: The Chesapeake Bay is 40 percent dead. And isopods are real. (Also available on VOD) A-

