4. Octopus have three hearts. 
Oh yeah, and octopus have blue blood. And did we mention they have 8 brains?
Find out more awesome octopus facts from The Terramar Project.
4. Octopus have three hearts. Oh yeah, and octopus have blue blood. And did we mention they have 8 brains?
Find out more awesome octopus facts from The Terramar Project.