The zebra mussel
Media playback is unsupported on your device

British waterways fight invasion by Russian zebra mussels

Water companies say they may have found a solution to the spread of an invasive Russian mollusc which is clogging waterways.

The zebra mussel costs Anglian Water alone £500,000 a year to remove from treatment plants.

As Danny Savage reports, it is hoped a new powder will kill them off.

  • 04 Aug 2011
Go to next video: Pearl mussel project at next stage