From the depths of the ocean to the skies above, every creature has its own rhythm. In this video, we compare the heartbeats per minute of 9 unique animals — including humans — each revealing something fascinating about how life ticks across the animal kingdom. One of them has three hearts. (Yes — the octopus 🐙. For this video, we focused on the beat of its systemic heart, the one responsible for pumping blood through its body.) And then there's the final entry... a tiny animal with a heartbeat