I love horseshoe crabs. It might be their quiet witness to half a billion years on earth, or the fact their hearts pump a singular amebocyte that defends their blood from pathogens, or the fact they can't be raised in captivity yet are preciously harvested by pharmaceutical companies. Horseshoe crabs are fascinating.
I wish I could claim that my interest in them predated the piece by Ian Frazier but it truly started after Christine Curry from the New Yorker sent me the article to illustrate. Once I read the story and began researching and drawing horseshoe crabs it was hard to stop. Below are some of the development sketches, exploring different ways to try to do these orthropods justice. Did I mention they swim upside down?