PETER YATES / SCIENCE PHOTO LIBRARY PETER YATES / SCIENCE PHOTO LIBRARY
Zebra mussel pollution. Sectioned water pipe is opened to reveal its interior clogged with Zebra mussels, Dreissena polymorpha. Zebra mussels were first recorded in North America in June 1988, having probably hitchhiked into Lake St. Clair on a ship from Europe. Since then they have invaded lakes and rivers in the USA, breeding very rapidly. By 1993, stretches of the Illinois river had achieved 94,000 mussels per square metre. Not only do the mussels encrust water pipes (including those of power stations), they also excrete a corrosive substance. They may also destroy indigenous aquatic life.
Model release not required. Property release not required.