The water along the seafloor of this zone is actually devoid of oxygen, resulting in a death trap for organisms unable to quickly return to the oxygen-enriched water above or survive in the low-oxygen environment. The water pressure can reach up to 76 MPa (750 atm 11,000 psi).ĭue to there being no light, there are no plants producing oxygen, which instead primarily comes from ice that had melted long ago from the polar regions. The abyssal zone has temperatures around 2–3 ☌ (36–37 ☏) through the large majority of its mass. It covers 83% of the total area of the ocean and 60% of Earth's surface. The word abyss comes from the Greek word ἄβυσσος ( ábussos), meaning "bottomless".
The abyssal zone or abyssopelagic zone is a layer of the pelagic zone of the ocean.
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