Ellen is joined by a familiar voice, science communicator Ralph Crewe, back with us to review the wiggly little living fossils full of teeth and blood: Pacific lampreys. We discuss the intersection between the natural and manmade world, what lampreys can tell us about the history of vertebrate evolution, the unique adaptations that have let them thrive from riverbeds all the way to the open ocean and back for hundreds of millions of years, and why you should thank a lamprey today. Links:Check out Ralph's work on YouTube over at Practical Engineering!Follow Ralph on Instagram and Twitter!For more information about us & our podcast, head over to our website!Follow Just the Zoo of Us on Threads, Facebook, Instagram & Discord!Follow Ellen on TikTok!