How to identify a Green Crab

Green Crab (Carcinus maenas)

  • Count the spines between and beside the eyes
  • The carapace is orange, green or mottled in color
  • The size (adults no larger than about 10 cm across) and boxy shape
Reprinted from http://www.pwsrcac.org/docs/d0044900.pdf

Other Similar Crabs:

Red Rock Crabs (Cancer productus & Cancer antennarius)

  • Ten spines beside and 4 spines between the eyes
  • Redder color, wider body and larger size
  • Claw tips dark, not serrated
Reprinted from http://www.photolib.noaa.gov/nmfs/index.html

Dungeness Crab (Metacarcinas magister)

  • Ten spines beside eyes with gap between 9 & 10
  • Light tipped claws and legs
  • Claw with serrated edge
  • Large size
Reprinted from http://www.dfw.state.or.us/MRP/shellfish/crab/images/Dungeness_ID_ODFW.gif

Further information on green crabs as well as some of the native crab species you might trap can be in the following guide.

Kachemak Bay Crab Identification Guide

A similar guide on identifying some of the fish you might trap.

Kachemak Bay Fish Identification Guide