Horseshoe crabs are an incredibly old and successful group of arthropods. And they're adorable too.



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Horseshoe crabs are an incredibly old and successful group of arthropods. And they're adorable too.
Human activity is affecting the population of Asian horseshoe crabs in the state of Sabah in Malaysia, possibly by disrupting the male to female ratio.
At a protected site, males outnumbered females by 2.58 to 1, whereas at a fishing site, the ratio was closer to 5.5 males per female.