When my cousin invited me to join him to fish for crawdads (crayfish), I couldn’t help but be excited. I grinned when he handed me a plastic pail. “No lid?” “You won’t need one,” he said, picking up the fishing rods and the small bag of chicken chunks we’d use for bait. Later, as I watched the small crustaceans climbing over one another in a futile attempt to escape the almost-full bucket, I realized why we wouldn’t need a lid.