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Abyssopelagic Zone

Depth: 4,000 to 6,000 meters. Characteristics: Abyssal zone, near freezing temperatures, very high pressure.

Hadalpelagic Zone

Depth: 6,000 meters to the ocean floor. Characteristics: Trenches and ocean floor, scarce life, very high pressure.

Mesopelagic Zone

Depth: 200 to 1,000 meters. Characteristics: Twilight zone, limited light penetration, decreasing temperature.

Epipelagic Zone

Depth: 0 to 200 meters. Characteristics: Sunlight zone, most marine life, photosynthesis.

Bathypelagic Zone

Depth: 1,000 to 4,000 meters. Characteristics: Midnight zone, no sunlight, bioluminescent organisms.

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