Invasive SpeciesGreen crab

Carcinus maenas
NOT FOUND by TheCoolGuys
ID Confirmed
Quality checked by Teacher
Peer reviewed by
Field Notes
During our species survey session we could see seagulls islands and endless water. We could hear rushing water and lots of wind. While we were looking in our quadrant we were surprised that we didn't find any crabs because all the other groups were. We were also surprised by this because there were traps near us that had up to 70 crabs. One of the hardest and most frustrating problems we ran into was finding a good spot. We still didn't find a good spot in the end. While we were looking for green crabs we were happy because we were out of school on a field trip.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
Our team has evidence to show their were no green crabs in our quadrant at Reid State Park because nothing had any features of green crabs. We found lots of seaweed and looked though the seaweed, but found no remains of green crabs, or any live crabs.
Photo of my evidence.
On the other hand we found a piece of seaweed that looked like a crab claw, but it was clearly not a crab because it had no features of a green crab such as eye balls, legs, or a carapace.
Photo of my evidence.
Although we found other alive species such as periwinkles, different varieties of seaweed, mussel, and barnacles. We pulled out some of the seaweed, but still found no crabs anywhere near our quadrant.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find it
Scientific name:
Carcinus maenas
Common name:
Green crab
Sampling method: 
Quadrat (user-placement)
Photo of our sampling method.
Place Studied
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Map this species
N 43.784422 °
W -69.721726 °
Observation Site Information
A photo of our study site.
Coastal - Rocky intertidal
Trip Information
Reid State Park, bridge
Trip date: 
Thu, 2013-10-24 08:30
Town or city: 
Type of investigation: 
Species Survey
Time of low tide: 
Thu, 2013-10-24 21:14


I think you did an awesome job showing that you did not find green crab. Not only did you include concise and convincing evidence, but it also made me chuckle. Thanks for posting great data! I recommended you to the best of pages (