tube worm

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tube worm

any POLYCHAETE worm that lives in a tube. Tube worms are mainly sedentary.
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Caption: Hydrothermal vents, and associated deep-sea ecosystems (giant tube worms, shown), are more abundant than scientists thought.
Creatures such as the tube worms and other species that live near the hydrothermal vents are termed extremophiles, which are life forms that inhabit environments human beings consider "extreme"--habitats that seem to be unsuitable for life.
But the Alvin proved them wrong when pilots looked out the porthole upon giant tube worms, some four feet long, clustered around the vents.
The volume is illustrated with more than 100 high-resolution photographs of creatures such as blind crabs, luminous jellyfish, and giant tube worms.
After two and a half hours, you reach the bottom, where you see mussels, shrimp and tube worms.
Alvin's blue-green headlights panned across a bizarre scene of red-tipped tube worms, shrimp, and fish crowded around a rocky column spewing smoky water.
Clams the size of dinner plates that reek of sulfur, tube worms that grow up to 8 feet and ghostly crabs and eel-like fish share the narrow but surprisingly rich life zone around the vents.
The hulls of oceangoing ships traditionally have been coated with toxic paints containing heavy metals such as copper and tributyltin, active ingredients that work by poisoning hull-hugging marine organisms such as barnacles, tube worms, and algae.
In Monterey Bay's submarine canyon, for example, clumps of clams and tube worms cluster around sulfide-emitting "cold seeps," gathering energy thanks to sulfide-eating bacteria housed within their bodies.
Scientists say the 10ft tube worms live 1700ft under the surface and don't eat.
Rather, the food supply provided to sediment microbes by oil and gas fuels unusual ecosystems of abundant tube worms, clams, and mussels specially adapted to the conditions.