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Photo © Joel, all rights reserved
47.5401042388, -122.3975667953 (Google, OSM)
47.5401042388, -122.3975667953
open
Mar. 21, 2012 13:50:29 -0700
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Comments & Identifications

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Purple Shore Crab - Photo (c) Dan Hershman, some rights reserved (CC BY)
invertboy's ID: Purple Shore Crab (Hemigrapsus nudus)
Posted by invertboy over 2 years ago (Flag)
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Hemigrapsus - Photo (c) Lynette Schimming, some rights reserved (CC BY-NC-SA)
harvestman's ID: Genus Hemigrapsus, a member of True Crabs (Infraorder Brachyura)
Posted by harvestman over 2 years ago (Flag)
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Lots of Shore Crabs here around the Puget Sound beaches. Rock flipping never gets old.

Posted by harvestman over 2 years ago (Flag)
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Purple Shore Crab - Photo (c) Dan Hershman, some rights reserved (CC BY)
greenrosettas's ID: Purple Shore Crab (Hemigrapsus nudus)
Posted by greenrosettas over 2 years ago (Flag)
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Wow, look at the red one. I've never seen that coloration before, cool observation. Also in one of the pictures there is a Yellow Shore Crab (Mud-flat Crab, Hairy Shore Crab, Oregon Shore Crab) - Hemigrapsus oregonensis.

Posted by greenrosettas over 2 years ago (Flag)
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All except the last photo are H. nudus exhibiting their common color morphs. The last picture is H. oregonensis with some interesting carapace color. Note the hairy legs, which is the easiest way to distinguish from H. nudus. If it were me, I'd put it in a separate observation so there are records of both of them.

Posted by invertboy over 2 years ago (Flag)
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Im not sure I understand your comment invertboy. I dont see hairy legs on any of them and the pics I'm finding of H. oregonensis are mostly greenish like the one in the second photo, not white like the last.

Posted by harvestman over 2 years ago (Flag)
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Identification Summary

Hemigrapsus - Photo (c) Lynette Schimming, some rights reserved (CC BY-NC-SA)
harvestman's ID: Genus Hemigrapsus, a member of True Crabs (Infraorder Brachyura)
Hemigrapsus - Photo (c) Lynette Schimming, some rights reserved (CC BY-NC-SA)
Community ID: Genus Hemigrapsus, a member of True Crabs (Infraorder Brachyura)
About
Purple Shore Crab - Photo (c) Dan Hershman, some rights reserved (CC BY)
invertboy's ID: Purple Shore Crab (Hemigrapsus nudus)
greenrosettas 1 person agrees

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Data Quality Assessment

Community-supported ID? Yes
2 people agree
0 people disagree
Date? Yes
Georeferenced? Yes
Photos or sounds? Yes
Is the organism wild/naturalized? Unknown
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Yes / No
Does the location seem accurate? Unknown
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Does the date seem accurate? Unknown
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Observation © Joel
Cc-by_small some rights reserved

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