Invasive SpeciesAsian shore crab

Hemigrapsus sanguineus
NOT FOUND by FlufflyCrabbyCr...
ID Confirmed
Quality checked by Go science
Peer reviewed by madcabbyz
Field Notes
Our group research site was Reid State Park, October 27th, 2017. The beach was covered in rocks and seaweed and small-ish medium patches of sand here and there. Our sampling method was quadrant user placement. We placed our quadrant on the seaweed with many small rocks. On the day we went to study it was a warm and sunny, most of the rocks and seaweed were dry. We were studying close to the water, under large and small rocks and seaweed. We found other species, like mussels, periwinkles, shrimp, small lobsters and some small fish. Our group found three crabs that we think are green crabs, but we found no Asian shore crabs which is the crab we was looking for.
Supporting Evidence
Photo of my evidence.
An Asian shore crab has a square shaped shell not a pentagon shape like this crab above.
Photo of my evidence.
The Asian shore crab has 3 spines near their eyes. This crab has five, so this shows that it may be a green crab.
Photo of my evidence.
An Asian shore crab has white or brown short spotted/striped legs this crab does not so this shows it is not an Asian shore crab. We think this crab is a female green crab.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find it
Scientific name:
Hemigrapsus sanguineus
Common name:
Asian shore crab
Sampling method: 
Quadrat (user-placement)
Photo of our sampling method.
Place Studied
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Map this species
N 43.785237 °
W -69.722588 °
Observation Site Information
A photo of our study site.
Coastal - Rocky intertidal
Trip Information
Reid State Park river
Trip date: 
Fri, 2017-10-27 10:00
Town or city: 
Type of investigation: 
Species Survey
Time of low tide: 
Thu, 2017-10-26 11:08


Well presented evidence!