Invasive SpeciesEuropean shore crab

Carcinus maenas
FOUND by Crab84
Rye, NH
ID Confirmed
Quality checked by Haley
Peer reviewed by
Field Notes
The weather was rainy and total, we found 109. 108 were European Shore Crabs and 1 was an Asian Shore Crab. none were native to the area.
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 identifying this crab!

Wow! 109 crabs and all invasive. Is that what you predicted you might find or were you surprised by these results?

This was our first time doing this investigation, so we were unsure what to expect. We had hoped to find at least a few and were very surprised to find so many and all invasive!