How to track a horseshoe crab      1. If that is a last year’s
HC, how long does it take for them to become adult? For that
matter (if they survive predators etc) what is their life
expectancy? I see how these guys can be fascinating! RH    2. Hi
there! You just made my day in that you’re seeing the divine
merits of the laid back horseshoe crab! They take about 8-10
years to become adults and live for about 17-20 years. They molt
several times each of their first years growing a quarter of
their size each time until they’re full grown.  Speak Your Mind