Discover nature this week and a creature unique to Missouri's clear Ozark streams. According to the Missouri Department of Conservation the clear, rocky streams of the Ozarks are home to twenty-six species of crayfish. Anyone who has played in a clear Missouri stream has run across what is most often locally called a crawdad. Missouri children spend countless hours catching them every summer but what they may not know is how unique some of these pinchers truly are. Eleven of our crayfish species