Some interesting facts about Octopus on World Octopus fday

octopuses have venom, produced by microorganisms residing within it

A small blue-ringed octopus bite can paralyse a human adult.

Octopuses, after mating and giving birth, die shortly

Some octopus fossils, are known to be older than most creatures currently existing

octopuses have nine brains – one that controls the nervous system and one in each arm 

Octopuses have 3 hearts – two for moving blood to the gills and one for pumping blood 

To survive in deep sea, octopuses develop hemocyanin – a protein containing copperr

Octopuses, if loses an arm, have the ability to grow it back 

 Blood-supplying organs stop beating when an octopus is swimming.

octopuses can change colours to mingle with their surroundings