Did you know that horseshoe crabs belong to the family of
Arachnid? Arachnid are invertebrate animals with joint legs. They have 8 legs
but sadly horseshoe crabs wasn’t able to evolve and make it over the sea floor
just like his cousins. Horseshoe crabs are prehistoric survivors dated back
some 500 million years ago. These crabs has long tails that they use to dig up
food in the ground or a good help when they’re turned upside down. They also
have 10 eyes much more similar to spiders. But then, the number of horseshoe
crabs are starting to decline because people are catching them for their
medically valuable blood.
More Here: http://listverse.com/2015/06/11/10-pairs-of-animals-you-wont-believe-are-related/
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