Invasive SpeciesRock snot

Didymosphenia geminata
NOT FOUND by Smartyplants
ID Confirmed
Quality checked by TeamAcadia
Peer reviewed by Angel
Field Notes
I was happy because we were going to try and find out if there was rock snot in the stream behind the school. I saw rocks, running water, trees, railroad tracks. I heard running water and animals making noise. I could smell pine from the pine trees. I was surprised that we didn't see any rock snot. I couldn't get a good picture of the rock at first because of the suns reflection.
Supporting Evidence
Photo of my evidence.
The Rock snot is supposed to look slimy in the water, and feel like wet wool.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find it
Scientific name:
Didymosphenia geminata
Common name:
Rock snot
Sampling method: 
Time search
Photo of our sampling method.
Place Studied
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Map this species
N 44.729397 °
W -68.626122 °
Observation Site Information
A photo of our study site.
Freshwater - In a stream or river
Trip Information
Mill Stream
Trip date: 
Thu, 2011-09-08 13:31
Town or city: 
Type of investigation: 
Species and Habitat Survey
Eastern Coastal
MIDAS Code: 
Habitat Observations
Species diversity: 
Evidence of vectors: 
Dirt road
Walking trail
Water temperature: 
Dissolved oxygen: 


My group also searched for didymo, but in the Yarmouth area. We also did not find any evidence that would suggest the presence of the species. It would support your case better if you could present a couple more pieces of evidence, perhaps commenting on the status of the ecosystem in general (if there are any signs that it is being disrupted potentially by an invasive species).

- Btw, we like your name.

I agree. With a name like SmartyPlants, I'll defer to your judgement!

The photo of the stream you visited shows a habitat that's ideal for rock snot. If I were on safari for didymo, I'd look just where you did.

And you've nailed its description--slimy in appearance but somewhat gritty (like wet wool) to the touch.

If possible, keep looking for didymo in this particular stream. One question to ask is this: "how's the fishing?" Didymo travels on fishing boots and waders, so if it this stream is popular with trouters, it's a good candidate for rock snot invasion.

Thanks for looking! --Paul

Thank you, and your welcome! Our teacher said that people do fish in that brook. We will try to check again, if possible.