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Octopuses. 

Octopuses
live in different areas of the ocean, including coral reefs, palliative waters, and beaches; Some live in the interior and others in the abyss. Most species grow rapidly, mature early and are short-lived. In most species, the male uses a specially adapted arm to deliver the bundle of sperm directly to the female's lining cavity, then he becomes intelligent and dies, while the female collects fertilized eggs in a hole and cares for them until the eggs hatch after which she also dies. Strategies to protect oneself against predators include ink expulsion, camouflage and threat display, the ability to move quickly through water and the ability to hide, even deception.[7]

All octopuses are poisonous, but only blue/ringed octopuses are known to be deadly to humans.
Octopuses are mythological seen as sea monsters such as the Norwegian Krakow and the Aromatic of Ainu, and probably the roar of ancient Greece. A fight with an octopus is published in Victor Hugo's book Toilers of the Sea, which inspires other works such as Ian Fleming's Octopus. Octopuses are found in the Japanese aphrodisiac, the antlers. They are eaten by people in different parts of the world, especially in the Mediterranean and Asian seas, and are considered a food.

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