Yosemite Ranger Notes

About This Blog

Ranger-naturalists have been interpreting the natural and cultural resources of Yosemite for park visitors for nearly a century. In this blog, some of Yosemite's park rangers share recent observations from around Yosemite.

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The Parasitic Mind-Controlling Worms of Yosemite!

November 20, 2015 Posted by: BA - Park Ranger (Yosemite Valley)

I am often approached in the Yosemite Valley Visitor Center with oddities found while exploring Yosemite National Park. About a week ago, I was brought some particularly interesting photos of a long and skinny worm found in a puddle near North Pines Campground.


Last updated: March 27, 2021

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