Notochord Memes

Forget "return to monke" memes - evolution's playing the long game! This diagram shows how ascidians (sea squirts) start life as free-swimming tadpole-like larvae with a notochord (primitive backbone) but then settle down and basically eat their own brains during metamorphosis. They transform into what looks like a boring filter-feeding blob attached to rocks. It's like nature said "Vertebrate features? Nah, too much work - I'm just gonna sit here and filter water forever." The ultimate career downgrade! These creatures literally evolved to have LESS features. Talk about embracing the simple life!