Octopus Siphon at Anatomy

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Octopus Siphon. Most octopuses move by crawling along the bottom with their arms and suckers, though when alarmed they may shoot swiftly. This permits oxygenated water to pass through its internal gills, allowing it to breathe.

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The octopus has eight limbs, two of which function as legs while the remaining six function as arms. If threatened, octopuses shoot an inky fluid that darkens the water, confusing the aggressor. The octopus uses it to propel itself while swimming.

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Octopuses use their siphon to force water out in jets for propulsion and to flush waste products from the anus. Instead of a hard, protective shell, the octopus’s boneless body is covered with a soft mantle. The basic anatomy of the common octopus, octopus vulgaris consists mainly of 3 main parts: So although not exactly flatulence, octopuses' ink—used to confuse predators—does emerge from the opening that could be considered its anus.