What’s didymo?
It’s a microscopic alga known as a diatom that’s invading our rivers and streams. Didymosphenia geminata, also known as ‘rock snot’ or ‘didymo’, can smother entire stream beds with mats as thick as eight inches and can ruin just about any river or creek.
What does it look like?
Didymo can be found on rocks in moving water and is often mistaken for fiberglass or toilet tissue. Unlike most other algae, didymo feels like wet cotton and isn’t slimy. It is generally brown, tan or yellow in color.
What to do? Mountain River Journal offers advice for you river hopping fishers: “The procedure is pretty easy, the hard part is remembering. And it really is best done here before you drive home…”
SwittersB & Exploring 
Thanks Gaz,
That brought on my daily visit to the long drop a lot quicker than I expected this morning…thanks for sharing!
Who needs coffee I say when an image of Didyamo would suffice.
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