What makes jellyfish go? Without a heart, blood, or a brain, the humble jellyfish has survived five mass extinctions, and it's still here, gentling swooshing through the water. In this beautiful ultra-high-definition video from Deep Look, we learn how jellyfish work. If you have three minutes, make this fullscreen:

If you prefer a non-video writeup, check out this article by Jason Jaacks.

As I write this, Deep Look only has 17,000 YouTube subscribers. That's nuts. Let's fix that, okay?