Invasive SpeciesGreen crab

Carcinus maenas
NOT FOUND by kosg
ID Confirmed
Quality checked by palmer
Peer reviewed by
Field Notes
It was a warm day. The water was smooth in some places but rough in others.
Supporting Evidence
Photo of my evidence.
I know this is not the Green Crab because a Green Crab is shaped like a pentagon.
Photo of my evidence.
Photo of my evidence.
The Green Crab has 5 spines on the outside of their eyes, unlike this crab.
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: 
Photo of our sampling method.
Place Studied
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Map this species
N 44.039410 °
W -68.843250 °
Observation Site Information
A photo of our study site.
Coastal - Dock
Trip Information
Carver's Harbor
Trip date: 
Fri, 2011-04-29 12:30
Town or city: 
Type of investigation: 
Species Survey
Penobscot Bay
Time of low tide: 
Fri, 2011-04-29 03:11


You are right, this is not a green crab. It appears to be a toad or lyre crab of the genus Hyas. It is pretty unusual to see these in the intertidal zone....good find!

Thank-you! I found out that it was a lyre crab. I found this crab in a trap out in the ocean.

Thanks for letting me know! That makes sense that you found it in a trap as they do like deeper water.

Hey there,

That's a cool looking crab. I've never seen one in the intertidal. Did you catch it in a lobster trap?

I had never seen this type of crab before either until the day I found it. Yes, I did find it in a lobster trap.