Hiking in Henry Cowell State Park, wading in the river, my family and I found a dozen signal crayfish (Pacifastacus leniusculus), within just a few meters of river bottom. Far from running away from us, they tried to surround us and pinch our toes. The notable light stripes on their claws made them visible through the murky, silt filled water. Here’s a photo I took of a signal crayfish that Arthur caught for me. Only he was brave enough, in the face of bare toes, to scoop one up to look at it more closely. None of my sketches of the wiggly snapping crayfish are as good as this photo of our little friend.