Invasive SpeciesDasysiphonia

Dasysiphonia japonica
NOT FOUND by joe_ab
ID Confirmed
Quality checked by go science
Peer reviewed by joe_cd
Field Notes
One of the things I had trouble with was finding good seaweed that would be interesting. But one of the biggest problems I has was finding seaweed thin enough to use. The microscopes were frustrating at first because I had trouble getting to right angle with the iPad. It took a long time to take a good photo, but when I figured out how to get the correct angle I was very happy. We used the microscopes so we could see the microscopic features of the seaweed. My friend found a interesting small creature that appears to be some sort of crustacean.
Supporting Evidence
Photo of my evidence.
Magnification= 400x I think that this is NOT Dasisyphonia because the cells are not the correct shape or formation. Dasysiphonia is normally a lot more see-through that this seaweed.
Photo of my evidence.
Magnification= 100x I think that I did NOT find Dasysiphonia because the seaweed looks nothing like Dasysiphonia. This is because the side branches don’t have shepard’s hooks, and the side branches don’t have the single cell formation that Dasysiphonia has.
Photo of my evidence.
Magnification= 100x I think that I did NOT find Dasysiphonia, because the branches that are coming off of the main branches are multicellular, not single cellular. Plus, there aren’t any shepard’s hooks, either.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find it
Scientific name:
Dasysiphonia japonica
Common name:
Sampling method: 
Photo of our sampling method.
Place Studied
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Map this species
N 43.828000 °
W -68.895900 °
Observation Site Information
A photo of our study site.
Coastal - Dock
Trip Information
Ragged Island
Trip date: 
Tue, 2017-11-14 14:41
Town or city: 
Type of investigation: 
Species Survey
Eastern Coastal
Time of low tide: 
Tue, 2017-11-14 14:27



I think you're probably right, especially based on the fact that the seaweed remains multiaxial in the branches.

Thanks for your help in monitoring this seaweed!

- Matt Bracken

Nice work, joe_ab.

You supported your claim with great written and photographic evidence. It was nice to hear that you finally had success with the iPad/microscope combo. I know that can be a bit tricky.

Thanks for helping monitor our coastline for this invasive algae.