A National Park Service researcher holds a brook trout in Mount Rainie
![Scientist holding a brook trout with gloved hands](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/mt_rainier_3rd_4th_deployment-295_l.jpg?itok=az1nWo_B)
Detailed Description
A National Park Service researcher holds a brook trout in Mount Rainier National Park, Washington. Scientists have found low levels of mercury found in fish from National Parks in Western States.
Sources/Usage
Public Domain.