If you use assistive technology (such as a screen reader) and need a
version of this document in a more accessible format, please email email@example.com.
Please tell us what format you need. It will help us if you say what assistive technology you use.
Post mortem studies of otter carcasses collected in England and Operations since 1992 reveal that the otter population is healthy and expanding, but there is still evidence of widespread contamination of the food chain by pollutants that have been banned.