Invasive SpeciesChinese mitten crab

Eriocheir sinensis
NOT FOUND by Green Team 1
ID Confirmed
Quality checked by Mrs. Griffith
Peer reviewed by Green Team 1 Members
Field Notes
We are happy because we got to explore and enjoy Maine's rocky coastline. We saw bright blue oceans, sunny skies, slimy seaweed, and salty mud. We were surprised to have found so many small and large crabs in our small area.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
There were no crabs that had the same characteristics that the Chinese mitten crab had. The Chinese Mitten Crabs have complex patches of hair on the White-tipped claws.
Photo of my evidence.
There were no crabs that had a width of three inches.
Photo of my evidence.
There were no crabs with four spines on either sides.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find it
Scientific name:
Eriocheir sinensis
Common name:
Chinese mitten crab
Sampling method: 
Quadrat (randomized- placement)
Photo of our sampling method.
Place Studied
We’re sorry, JavaScript is required to view the map. If JavaScript is you may wish to upgrade to a newer browser in order to view this map.
Map this species
N 44.882020 °
W -67.131448 °
Observation Site Information
A photo of our study site.
Coastal - Rocky intertidal
Trip Information
Reversing Falls
Trip date: 
Fri, 2017-09-22 09:00
Town or city: 
Type of investigation: 
Species and Habitat Survey
Eastern Coastal
Time of low tide: 
Fri, 2017-09-22 08:00
Habitat Observations
Species diversity: 
5 different species
Evidence of vectors: 
Water temperature: 
Dissolved oxygen: 


Thank you for the advise!

Nice job ruling out the mitten crab. A V shaped notch between the eyes is a characteristic of mitten crabs that is good to look out for too. Be careful with identifying a crab by just size (or color, for that matter) as these things can be very different from one crab to another!