Jellyfish, corals, anemones… they have a couple things in common. They’re all cnidarians, and they all seem like they don’t really have a whole lot going on. They just sort of float around! But looks can be deceiving: this mysterious, blobby phylum holds many secrets!

Head to https://www.patreon.com/SciShowTangents to find out how you can help support SciShow Tangents, and see all the cool perks you’ll get in return, like bonus episodes and a monthly newsletter!