A glass of water has DNA traces of EVERY living thing in a whole lake.

A Danish research team has found an incredible short-cut  – a lake water sample the size of a shot-glass can contain evidence of an entire lake fauna.

It’s so effective in counting not only which creatures are present, but how many, that the researchers think that in future it may even be used to count fishing quotas.

Researchers at the Natural History Museum of Denmark found that rare and threatened animal species could be monitored simply by taking note of the DNA traces in fresh water environments.

‘In the water samples we found DNA from animals as different as an otter and a dragonfly,’ says Philip Francis Thomsen.

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