Invasive SpeciesGreen crab

Carcinus maenas
FOUND by mightykermits
Cape Elizabeth Maine
ID Confirmed
Quality checked by Pp
Peer reviewed by VI, AM
Field Notes
Field notes:On our field trip, we were looking for the invasive green crab. I think that we were successful because we were using the sampling method, just looking around. In a rocky, seaweed and sandy environment. I hear people yelling,birds. I smell seaweed and ocean water and I see a lot of seaweed and a beautiful of beach.
Supporting Evidence
Photo of my evidence.
I think I found it because, on Vital Signs we checked the ID sheet for the green crab, and learned that only 5% of the adults are green and that the other colors are brown and red, that is why my group thinks that these species live near crescent beach. Our crabs that we found have those colors so that's why we thought they matched up with the pictures the ID sheet. Also it is important to look at the shape of the shell not just the color.
Photo of my evidence.
My group also thinks we found it because on the vital signs id sheet we looked at said that they were at least ten cm. Long and another crab we found surpassed that amount. The shell is shaped like a pentagon (5 sides).
Photo of my evidence.
We also think we found it because, the green crab vital signs ID sheet showed that the green crab has 5 spines around each eye which our crabs had. Something else you should be looking for are thin and sharp tips on there claws, some of there other abilities are that they are very fast.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Carcinus maenas
Common name:
Green crab
Sampling method: 
Just looking around
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 43.561759 °
W -70.219503 °
Observation Site Information
A photo of our study site.
Coastal - Rocky intertidal
Trip Information
Kettle Cove (CEMS 7th Grade)
Trip date: 
Tue, 2014-10-28 09:22
Town or city: 
Cape Elizabeth Maine
Type of investigation: 
Species Survey
Time of low tide: 
Tue, 2014-10-28 08:25


Very nice detailed notes!