Octopus Anatomy (Simple & Clear)

1. The mantl

 The mantle is the main body of the octopus.

It contains vital organs such as the heart, gills, stomach, and liver.
It also helps the octopus breathe and move water.

2. Arms (8 Arms)

An octopus has eight arms, not tentacles.
Each arm is extremely flexible and powerful.
The arms are used for walking, grabbing food, exploring, and defense.

3. Suckers

Suckers line the underside of each arm.
They help the octopus grip objects, taste food, and sense its environment.
Each sucker has strong sensory abilities.

4. Beak

The beak is hard and sharp, similar to a parrot’s beak.
It is located at the center where the arms meet.
The octopus uses it to break shells and tear food.

5. Eyes

Octopuses have highly developed eyes.
Their vision works very much like human eyes.
They can see clearly even in low light underwater.

6. Brain & Nervous System

Octopuses are among the most intelligent invertebrates.
They have a large central brain, but each arm has its own neural network, allowing independent movement and problem-solving.

7. Hearts (Three Hearts)

An octopus has three hearts:

Two pump blood to the gills
One pumps blood to the rest of the body

8. Gills

Gills extract oxygen from water.
They are located inside the mantle and are essential for breathing.

9. Ink Sac

The ink sac releases a dark cloud when the octopus feels threatened.
This helps confuse predators and allows the octopus to escape.

Amazing Fact:

“An octopus has three hearts, blue blood, and a brain in every arm.”