Invasive SpeciesEuropean shore crab

Carcinus maenas
FOUND by MrCrabs8424
Rye, NH
ID Confirmed
Quality checked by Makayla G.
Peer reviewed by
Field Notes
The weather was rainy and and overcast.In total, we found 109 crabs.108 were European shore crabs and 1 was a Asian shore crab.None of the species we found were native.
Supporting Evidence
Photo of my evidence.
It has 5 spines.
Photo of my evidence.
It has a pentagon shaped shell.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Carcinus maenas
Common name:
European shore crab
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
N 43.042189 °
W -70.714837 °
Observation Site Information
A photo of our study site.
Coastal - Rocky intertidal
Trip Information
Odiorne Point Rye, NH
Trip date: 
Thu, 2017-07-13 10:00
Town or city: 
Rye, NH
Type of investigation: 
Species Survey
Eastern Coastal
Time of low tide: 
Thu, 2017-07-13 08:52


Great work! Interesting that you saw so few Asian shore crabs!

Where were all these crabs hiding? Was it hard to find them? How did you sample? Great work!

They were all hiding in and around the rocks. We used the "just looking around" method. Was very easy to find them. It was incredible!