For the curious <a href="http://johnbokma.com/blog/2017/06/15/disappearing-claws-in-the-dark.html" rel="nofollow">http://johnbokma.com/blog/2017/06/15/disappearing-claws-in-t...</a> has photos of Diplocentrus melici and shows its habitat.
pretty interesting research. biochem is fascinating to me. I know practically nothing, but it's it's pretty cool that the 'shape' of a compound (here we see oxygen/sulfur substitution) is often what matters.