The cnidarians are a really interesting part of the animal kingdom. They “break all three rules”, like having single-celled animals, animals that are supposedly

The cnidarians are a really interesting part of the animal kingdom. They “break all three rules”, like having single-celled animals, animals that are supposedly “immortal” if nothing kills them (certain jellyfish), and now this. I could see one of them becoming the next humans if we wipe ourselves out.