Invasive SpeciesAsian shore crab

Hemigrapsus sanguineus
FOUND by debraandtheunic...
ID Confirmed
Quality checked by Go science
Peer reviewed by crawling crabs
Field Notes
The morning that we went to Reid State Park, it was sort of rainy and foggy, but as the day went on it progressively got sunnier. We found multiple green crabs and 2-3 Asian shore crabs.There were very slippery rocks and and we went at low tide where we also found a type of eel that was not determined. There were also other spots we could have investigated for these crabs such as near the shore. We also found multiple green crabs which were identified by the 5 spines and the pentagon shaped carapace.
Supporting Evidence
Photo of my evidence.
We know this is an Asian shore crab because of the striped legs and white dots on the square shaped carapace.
Photo of my evidence.
This picture tells us that it is a female because of the larger telson on the bottom side of the crab.
Photo of my evidence.
This picture tells us that is close to 3 centimeters wide.
Species Observation: Species Looked For
Did you find it?: 
I think I found 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 43.785167 °
W -69.721416 °
Observation Site Information
A photo of our study site.
Coastal - Rocky intertidal
Trip Information
Reid State Park river
Trip date: 
Tue, 2017-10-24 09:00
Town or city: 
Type of investigation: 
Species Survey
Time of low tide: 
Tue, 2017-10-24 08:47


Great work! Don't forget to count the spines. That's a reliable way to ID these crabs.