Fact of the Day #2: Pea Crab - Oceana USA
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August 13, 2010

Fact of the Day #2: Pea Crab

BY: MollyH

Because it’s Friday, I thought I’d give you a bonus FOTD!

The pea crab is a tiny crustacean about the size of a pea. They are soft-bodied and so small that they actually spend most of their lives inside the shells of other little animals, like mussels or tubeworms. 

There is some debate as to whether or not the relationship between the pea crab and its host is parasitic or not.  Pea crabs rely on their host for protection and food but it is unclear if this is harmful to the host.

Female pea crabs are translucent and larger than the yellowish males.  Check out this picture of a pea crab and have a great weekend!