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Fridge Worm
● Anchored Life › Worms

Fridge Worm

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Anchored Life
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Worms
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Fridge Worm
  • Ventworm cryocthonian, the vent worm that brings cold from below.
  • 1. Vent worm
  • The fridge worm's body plan is familiar from terrestrial analogs - a tubular body with a protruding gill. The body hosts a colony of symbiotic bacteria in a chamber called the trophosome ("feeding body"). These bacteria help the worm survive extreme environments.
  • 2. Cold water emitter
  • The cryocthonian lives in colonies along geothermal gradients - from hot to cold. It exploits the flow of energy and minerals through the rock to feed. Colonies pumps deep, cold brine (usually at 4 degrees C) to the worms exposed to hot water, helping regulate their temperature.
  • 3. Sulfur-based metabolism
  • The symbiotic bacteria in the fridge worm feed on sulfur and other dissolved minerals. The fridge worm uses cold deep-sea brine to trigger chemical reactions which help collect minerals from the hot vent water.
  • Assessment: Produces pockets of cold water. May attract life that cannot tolerate the surrounding heat.

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