Why you wouldn't survive the Cambrian (500 million years)?

Welcome to the Cambrian, 500 million years ago! Do you like doing this to yourself? Your time machine seems to break down a lot. The atmosphere is still toxic for you, the land has not figured itself out and everything in the ocean is hungry for the soft tissue that is you. Let's break this down in the video. I want to know which is your favourite prehistoric ocean creature? Hit me in the comments.