Invasive SpeciesAsian shore crab

Hemigrapsus sanguineus
NOT FOUND by ppj
ID Confirmed
Quality checked by Go science
Peer reviewed by Jason
Field Notes
We found 14 green crabs and no Asian shore crabs. We found one green crab that had a orange and green combination of colors. We were surprised by the orange and black crab. One of our group members didn't want to touch anything, but somehow she managed to find the first crab. One of our partners got pinched several times and bled a little. The weather was sunny and a little windy. There was a lot of seaweed and rocks, we found most of the crabs under rocks. There were quite a few slippery rocks and seaweed that were hard to walk on, and we fell a lot.
Supporting Evidence
Photo of my evidence.
Here if you count the spines you will see that it has five spines the same as a green crab, where Asian shore crabs have 3.
Photo of my evidence.
If you look at the legs you can see they are not like an Asian shores because Asian shore crabs have a white and blackish banded claws with a bulb like tip.
Photo of my evidence.
The shape of the shell is not the same as an Asian shore crab. Asian shores have an almost square shaped shell.
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 43.784899 °
W -69.722424 °
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


Great work identifying these crabs! Very clearly presented evidence!