They seem harmless, sitting at only a few centimeters long, but they present a huge ecologic and economic threat to Texas waters. Zebra mussels, named after the black stripes along their shells, can damage fishery production, aquatic life, and the Texas water-supply infrastructure. These little creatures can cost Texans hundreds of millions of dollars!
Over the past few weeks, the mussel population infested two Texas river systems - Canyon Lake on the Guadalupe River and Lake Travis on the Colorado River.
Though the state has made serious efforts to contain these creatures, they are usually spread by unknowing boaters who carry the mussels from infested to new waters. The consequences can be fast and extensive.