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Monday, April 17, 2006

"Back" to a Mystery

These backs are to a creature I think you will guess quickly. But the real mystery is why do you think I am seeing so many of these backs right now?


At April 25, 2006, Anonymous Mrs. Newton's 1st graders said...

We think these are crabs and that you are finding the backs because the crabs are getting too big for the shells - kind of like a snake losing its skin.

At April 25, 2006, Anonymous Mrs. Newton's 1st graders said...

At first we thought the big crab had eyes, then Mrs. Newton said to look closer. These are barnacles! It seems like barnacles will grow on about anything.

At April 25, 2006, Anonymous ron hirschi said...

Yes. When a crab grows, it gets a completely new shell and pops out from under the old one. They are very soft at first, after coming out of the old shell. Not a good time for them......because predators can eat them more easily. But, they are safe from humans when they are soft because it is illegal to take soft shell crabs here on the Pacific Coast.


At June 07, 2006, Blogger Lucy said...

Can you please tell us if this crab is related to a hermit crab? Some of the children in our class have hermit crabs as pets?


At June 09, 2006, Anonymous ron hirschi said...


Yep! These are related to hermit crabs. But these crabs depend on their own hard shell for protection, not an empty snail shell they find and use as a house.

But just like a hermit crab, these crabs need new homes as they grow. So, they pop out of their old shell and grow a new one.

Aloha, Ron


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