What happens when you open up a jar of sealed river water after 1 year?

The smell was, well, unexpected.

The pressure in the jar was also surprising and was not what I expected at all!

This closed ecosystem, one of many I've put together, is an amazing testament to the resilience of life in extreme environments, and also is a gross reminder of what lives in the water of the river or lake that you may have grown up swimming in each summer, or maybe still swim in today!

Also, upon closer inspection, I'm pretty sure those are copepods, not daphnia, though there could be both swimming around


Jars I like to use for these aquatic ecosystems: https://amzn.to/46WSuN9

Camera I use: https://amzn.to/3DmOGqN

Macro lens I use: https://amzn.to/3Dl3oP6



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