Forensics experts gather DNA to understand who was present at a crime scene. But what if the crime occurred in the middle of a lake, where DNA could be carried far and wide by wind and waves? That's the challenge faced by aquatic ecologists who study environmental DNA (eDNA) to monitor endangered animals, track invasive species, or monitor fish populations.

Forensics experts gather DNA to understand who was present at a crime scene. But what if the crime occurred in the middle of a lake, where DNA could be carried far and wide by wind and waves? That’s the challenge faced by aquatic ecologists who study environmental DNA (eDNA) to monitor endangered animals, track invasive species, or monitor fish populations.

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