Octopuses have three hearts, eight arms, and nine brains.
Recently, a scientific team sequenced the genome of an octopus, revealing several new facts.
In addition to its astonishing size, chameleon-like ability (changing color), and the presence of three hearts, it has been confirmed to have nine functional brains.
Each tentacle has a series of brains called the "command center brains."
It is believed that octopus blood is actually blue because it contains copper rather than iron, unlike human blood.
This animal has 33,000 genes for decoding proteins, which is 13,000 more than humans.