Invasive SpeciesAsian shore crab

Hemigrapsus sanguineus
NOT FOUND by RockCrabsClan
ID Confirmed
Quality checked by go science
Peer reviewed by
Field Notes
My group went down to Reid State Park around 9:30. Some problems were that the rocks were slippery from the recent rain and seaweed. We could hear the waves and the occasional seabirds. We could smell the ocean, and we could see the ocean and lots of rocks, and 1 or 2 small islands in the distance. We were in a 1x1 meter square quadrat ( We did not have a photo). We were happy because we did not find any Asian shore crabs or Chinese mitten crabs, and that is good because they are both invasive. But, we found large amounts of green crabs (especially young crabs.) This is bad because that means they are reproducing and their numbers aren’t going down. We were both surprised that we only found green crabs because we thought there were going to be less. We were also surprised to find a polychaete worm which was under a rock about 4 inches underwater.
Supporting Evidence
Photo of my evidence.
In this photo I see that the crab has five spines. I know its a green crab. Not an Asian shore crab.
Photo of my evidence.
I can see in this photo a pentagon shape shell. I know that green crabs have pentagon shape shells. I know its a green crab. Not an Asian shore crab.
Photo of my evidence.
I can see this photo that this crab does not have bands on its leg. I know this is not an Asian shore 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: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
N 43.784585 °
W -69.722135 °
Observation Site Information
A photo of our study site.
Coastal - Rocky intertidal
Trip Information
Reid State Park river
Trip date: 
Thu, 2017-10-26 09:00
Town or city: 
Type of investigation: 
Species Survey
Time of low tide: 
Thu, 2017-10-26 10:16
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