Co-existence with crustaceans
Laboratory tests show that sea lice medicines may impact crustaceans if these species come into contact with it. Some medicines may make an impact even in smaller doses. However, it is uncertain whether crustaceans actually do come into contact with sea lice medication after treatment in the ocean, because factors like currents, temperature, and other natural aspects impact how the substances break down. More research to improve our knowledge is underway.
In any case, we are working to avoid using sea lice medicines. Use of such medication has declined significantly in recent years. In line with the precautionary principle, Norway has also prohibited the release of sea lice treatment baths near shrimp fields.