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Twilight Zone

Ocean Biome

Isabella Metoxen

What is the twilight zone?

The area between 200m and 1,000m below sea level.

What is the twilight zone?

What is the climate like?

The tempature ranges from 41 degrees (200m below sea level) to 39 degrees (1,000m below sea level).

The climate is stable.

Climate

What lives in the twilight zone?

Jellyfish, octopi, squids, hatchet fish, anglerfish, brittle stars and many more animals! There are no plants living at this depth.

Plants/animals

Flora

There are no plants living at this depth because there isn't enough light to photosynthesize.

Flora

Fauna

  • Cuttlefish
  • Eels
  • Brittle Star
  • Hatchet fish
  • Zooplankton
  • Various types of jellyfish
  • Siphonophores
  • Cystisoma
  • Various types of squid

I couldn't find any symbiotic relationships.

What animals are commonly found here?

Bristlemouth fish are very abundant in the twilight zone.

Common animals

Food Sources

Food in the twilight zone

Trophic Pyramid

Siphonophores

Trophic Pyramid

Jellyfish

Cystisoma

Zooplankton

Food Chain

Food Chain

Cystisoma Jellyfish Siphonophores

Food Web

Jellyfish

Strawberry Squid

Food Web

Cuttlefish

Marine Snow

Cystisoma

Siphonophores

Human Impacts

Human Impacts in the twilight zone

The ocean absorbs 25% of CO2 that humans put into the atmosphere. The twilight zone brings the carbon from the surface to the lower parts of the ocean, preventing it from returing to the atmophere as a gas tha traps heat.

Human Impacts among other info

Food stuff and animals

Sources

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