Quiz #86: Seashore

Last weekend, I photographed this dead but fairly intact crab (one leg is missing) on the southern rocks of Timber Point*. Who was this clawed creature?

Photo of Quiz #86: Seashore

Photo of Quiz #86: Seashore

A. Common Spider Crab

B. Jonah Crab

C. Atlantic Rock Crab

D. Green Crab

When ready, scroll down for the answer...

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Photo of Quiz #86: SeashoreThe answer is... D: Green Crab (Carcinus maenas).  Common Spider Crabs (Libinia emarginata) have spiny backs, while both Atlantic Rock (Cancer irroratus) and Jonah Crabs (Cancer borealis) have bodies with 9 marginal teeth on each side.  Green Crab shells have 5 sharp indentations (teeth) on either side (see top photo).

*Timber Point, at the end of Granite Point Road, is the southern-most land in Biddeford, Maine and is located northeast of Kennebunkport's Goose Rocks Beach.  The US Fish & Wildlife website contains a brief description and trail map of the publicly accessible Timber Point Trail.

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