A mollusc with eight legs and soft body belongs to the order Octopoda. They are extremely flexible and bone less.Their ability to quickly change their colour is facilitated by unique skin cells.There are 300 species of the.Squids,Cuttlefish and nautiloids were their group members in Cephalopoda.

Octopus's The Oldest Animal 🐙

The Octopus is long around millions of year's ago.The oldest fossil of octopus's ancestor which is about 330 million years long before the dinosaurs. That specie have ten limbs whereas modern species have eight limbs.They have very short life span.The average life of octopus's is about 1 to 5 years.They breed only one time in their life and die shortly after that.

Habitat

Octopus's live in ocean's all over the world.Most of them live near the surface of water in shells and reefs.some species live on the floor of ocean,making their homes out of caves.

Weight Or Diet

The average size of octopus is about 12 to 36 inches and normal weight is about 3 to 10 kg.But there's a giant octopus whose size is about 30 feet and their weight is about 272 kg.

Octopus's are carnivore which means they eat meat.They are great hunters.They eat clams,shrimps,fishes and even sharks.They drop down on their prey and enfold their arms and pull them into their mouth.

Octopus Have Three Hearts ❤

The most interesting fact about octopus is that they have three hearts.The two hearts are used for circulate of blood to gills .They also release carbon dioxide and gain oxygen.The heart circulate the oxygen rich blood to organ's and muscles to provide energy to them.The third heart stop beating when the octopus is swimming.

Octopus Have Large Brains

Octopus are highly intelligent and are expert in problem solving.The are the intelligent among other invertebrates.The octopus have 9 brains.The main brain is in their head and others are distributed all over the body.Each arm have one brain.These small brains helps them to have control on their whole body.These small brains help them to have a remarkable level of co_ordination and control over each arm independently.They increase their flexibility.

Octopus Have Blue Blood

The another interesting fact about octopus is that they have Blue Blood. To survive in deep ocean's, octopus's blood is powered by copper. These copper have proteins called Hemocyanin.When oxygen meets with copper it create blue colour.At the bottom of ocean the water temperature is very low,so !there is less oxygen.Therefore the blood of octopus became sensitive which change in acidity.

Great Sense Of Touch

The octopus have very sensitive sense of touch.Their suckers have receptors which helps them to determine which they are touching.They can also taste the thing which they are touching/Octopus hunt for prey in cracks and crevices along the seabed using taste and touch.It is the ability todetect thing simply by touch.