Get a lifetime or yearly membership to Nebula here: https://go.nebula.tv/realscience Watch the bonus episode about sacoglossans like the leaf sheep here: https://nebula.tv/videos/realscience-these-slugs-break-the-rules-of-biology Watch this video ad-free on Nebula: https://nebula.tv/videos/realscience-why-nudibranchs-are-impressively-good-at-existing Patreon: (https://www.patreon.com/realscience) Instagram: (https://www.instagram.com/stephaniesammann) Images Courtesy of Getty Images Thanks to Dr. Terry Gosliner for his help and insight with this video! https://sluglab.wordpress.com/terry-gosliner/