Monday, July 25, 2016

Mercer Slough Dragonfly Survey

We had a group of high school volunteers in the park this weekend performing citizen science. These teens, who were volunteering through Mercer Slough, were tasked with collecting dragonfly larvae for the Dragonfly Mercury Project. The Mercer Slough Environmental Education Center is a collaboration between the city of Bellevue and the Pacific Science Center. The Dragonfly Mercury Project is a nationwide effort to measure mercury in dragonfly larvae. These teens got pretty dirty while having a blast digging through pond mud for larvae. After finding enough samples, the group measured, bagged and labeled the larvae which will be sent off-site for testing. Thank you to these helpful volunteers!

To learn more about the Dragonfly Mercury Project visit:
To learn more about Mercer Slough visit:

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