Re:Polish city is using mussels to monitor water quality
by grvbck on Monday February 03, 2025 @11:21AM
(#42919805)
Valid question though, and the answer to what I think you wanted to know is >3 months:
> the clams are “paid back after three months of work by releasing them to a place from which they will never be caught again”. [---] this is done because they eventually become resistant to contamination in the water.
> the clams are “paid back after three months of work by releasing them to a place from which they will never be caught again”. [---] this is done because they eventually become resistant to contamination in the water.
https://www.zmescience.com/ecology/poznan-mussel-water-plant...