Dr. David Santillo, marine and freshwater biologist, senior scientist with the Greenpeace Research Laboratories, with more than 10 years experience in providing analytical support and scientific advice to Greenpeace offices worldwide. Greenpeace Research Laboratories, School of Biosciences Innovation Centre Phase 2, Rennes Drive, University of Exeter, Exeter, Devon, UK, EX4 4RN, Telephone +44 (0)1392 247920, Fax +44 (0)1392 247929, http://www.greenpeace.to/index.htm