• Schmoo@slrpnk.net
      8·
      9 days ago

      I assume they’re referring to how the presence of frogs is an indicator as to the cleanliness of the water. If the river is highly polluted no frogs will be present.

      • hazel@lemmy.blahaj.zoneEnglish
        5·
        8 days ago

        This is precisely what I meant, and I’m glad it came across. 💙

        • ErmahgherdDavid@lemmy.dbzer0.comEnglish
          6·
          8 days ago

          I personally only visit neighbourhoods where the frogs respond to my chirp of greeting by rolling around on their backs and allowing me to pet their tummies