Delaware Bay / Horseshoe Crab / Red Knot migration     -  excellent 15 min. video
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   source                 ***     “open circulatory system”    ***            Xiphosurans have well-developed circulatory systems, with numerous arteries that send blood from the long tubular heart to the body tissues, and then to two longitudinal si
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   Red Knot  -  migration info
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    See:       *hemoglobin*      page      See:        *hemocyanin*     page
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