updated 10:43 AM EST, Wed September 02, 2015

"The ability to assess wild fish stocks is becoming increasingly important as commercial fisheries collapse worldwide."

When it comes to monitoring biodiversity in marine and aquatic ecosystems, scientists have a handy new tool at their disposal: Environmental DNA - or eDNA - sampling. It's helping them track the animal species in these ecosystems more accurately (and cheaply!) than ever before.

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