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Joined: Mar 2005
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Moderator Hall of Fame 2014  Lunker
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Moderator Hall of Fame 2014 Lunker
Joined: Mar 2005
Posts: 21,513 Likes: 272 |
Many animals (fish , crabs , birds, etc.) use gravitational and magnetic sensing. ![[Linked Image]](http://forums.pondboss.com/ubbthreads.php?ubb=download&Number=16067&filename=P5240008.jpg)
Last edited by ewest; 05/05/20 11:59 AM.
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