Word:

black smoker

a vent at the bottom of the ocean, usually at a mid-ocean ridge, through which large quantities of water carrying minerals flow, producing a jet of fluid with the appearance of black smoke. The ocean water in crevices below the vent is heated to temperatures near 400° C, and dissolves quantities of metal salts, such as of copper, zinc, gold, and manganese. When the saturated mineral solutions exit the vent, cooling by contact with the ocean causes the metals to precipitate, mainly as sulfide or sulfate salts. Unusual forms of life such as tube worms have been found to live in the areas near black smokers. Additional information is available from The Natural History Museum of London and The American Museum of Natural History Expeditions.

See also: Smoker

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black root rot fungus
black rot
black rudder fish
black rudderfish
Black rust
black sage
black sally
black salsify
Black salts
black saltwort
Black Sea
black sea bass
Black September
Black September Movement
black sheep
Black silver
-- black smoker --
Black snake
black snakeroot
Black Spanish
black spleenwort
black spot
black spruce
Black squall
black squirrel
black stork
black sumac
black swan
Black Tai
black tea
black tellurium
black tie
Black tin
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