Invasive SpeciesAsian shore crab

Hemigrapsus sanguineus
NOT FOUND by madcrabbyz
ID Confirmed
Quality checked by Go science
Peer reviewed by
Field Notes
Our study site was at Reid State Park. We used a meter square for our study area. We found quite a few different species. For example, we found a lot of green crabs, seaweed, periwinkles, sea grass, mussels, and hermit crabs. The place we were at was very healthy and we didn’t see any pollution. We also saw little islands throughout the day, with a small dock, and there were logs and a bridge. Most of our ecosystem had rocks and seaweed, and there were some patches of sand down further. Everytime we put our square down to dig through the seaweed there was always little puddles and rock that the crabs went under for protection. That day that we went was really nice and the temperature was about 60 degrees Fahrenheit. But very surprised we did not find any Asian Shore crabs.
Supporting Evidence
Photo of my evidence.
We think we did not find the Asian shore crab because the crab up in the photo has no stripes on its legs, this one has no stripes on its legs, it is a green crab.
Photo of my evidence.
Another reason why we didn't find the Asian shore crab is because a Asian shore shell is more square shaped, and a green crabs shell is more pentagon shaped.
Photo of my evidence.
The last reason we think that we didn't find the Asian shore crab is because, an Asian shore crab has only 3 spines and an Green crab has 5 spines, and in the picture above this Green crab has only 5 spines.
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 43.785073 °
W -69.721810 °
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


Nice work, Madcrabbyz!