Small animals amuse and amaze scientists who take a close look at them in action. Sometimes it requires a high-speed camera to analyze the trick.
Scientists debate whether ctenophores are the earliest animals to appear in the Cambrian explosion. If so, they arrived with multiple tissues, a nervous system, and a digestive system.
It often seems that the closer you need to look, the greater the wonder. It’s as if someone set it there to hide, waiting for us.
Obviously, evolutionary “laws” are quite malleable and have to give way when they become too cumbersome.