And God created great ...every living creature that moveth,
which the waters brought forth abundantly,
after their kind,....
Genesis 1:21
"The horseshoe crab has long been regarded as a ‘textbook’ example of a ‘living fossil’. Its fossil representatives are found even in layers labelled as Ordovician, supposedly 450 million years old. And they look much the same as modern-day horseshoe crabs; certainly there is no evidence of any substantive evolution in all that massive alleged time.
The blue blood of the animal is also useful for mankind. It has been used for decades to help test for microbial toxins and impurities. Called the Limulus Amebocyte Lysate test (LAL), results are available within the hour and can determine quickly whether someone has a bacterial or a fungal infection.
According to a report that described the horseshoe crab as “an ancient animal, more [sic] than half a billion years old” researchers are now close to perfecting a synthetic substitute for LAL by “cloning their ancient chemical wisdom”.
The irony is the glib way in which these long timespans are inserted into such discussions, while missing the obvious; that the ‘unevolved’ crab itself is evidence against the very notion of its ‘ancient’ status." CMI