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• org/notebooks Cosma's Notebooks en Abyssal Vents .
• org/notebooks/1994/10/03#abyssal-vents To quote Bruce Sterling: <blockquote> H ot volcanic crevices at the bottom of the ocean, surrounded by previously unknown, chemosynthetic life forms. ... <P>The unique creatures in abyssal vents exist in crushing pressure, in total darkness (except for the sinister glow of hot lava), and sure enough, just like teakettles, the vents sit there piping out boiling water through long stone spouts, in a cheerful, complex chemical stew. ... </blockquote> <P>Life-forms, nutrient cycles, evolutionary history, possible role in the origin of life, <em>really neat and strange beasts</em>: ``clams full of hemoglobin, giant tubeworms that have no mouths or guts, dandelion jellyfish, `black smoker' volvanic vents, and big blind prawns. ... html">Exploring the Ocean Floor</a> <li>Cindy Lee Van Dover, <cite>The Ecology of Deep-Sea Hydrothermal Vents</cite> </ul> .

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• Hydrothermal vents.
• These ideas changed dramatically in the 1970's when the first hydrothermal vents were discovered in the Pacific ocean. ...   The illustration at the left shows ALVIN and its lights illuminating hydrothermal vents and the animals that live near them.
• The places where the hot water comes out are called hydrothermal vents. ...   These types of vents are called black smokers, and three black smoker chimneys are shown in the picture on the right.
• What was truly amazing about hydrothermal vents was that clustered around them were dense colonies of large, previously unknown animals such as tube worms, giant clams, and other strange animals. ...
• Since there is no sunlight at deep-sea hydrothermal vents, plants can not grow, and what puzzled scientists for a long time was what the animals were eating.  The sea water near hydrothermal vents is full of hydrogen sulfide, carbon dioxide, and oxygen, and it was discovered that special bacteria could live off of the hydrogen sulfide, and that these bacteria form the base of the food chain. ...   The picture on the left shows the diversity of life found at these vents.
• We do not know if there are active hydrothermal vents at the Puna Ridge. ...   Using the DSL-120 kHz side-scan sonar data and ARGO II photographs of the seafloor, we will look for evidence of hydrothermal vents in the our study area.   If there are active hydrothermal vents than there will almost certainly be life. ...
• Hydrothermal vents stop and others start. New vents may be a long way away from old vents.   How do animals get to new hydrothermal vents?.
• the animals swim to the new vents.

• Giant tubeworms that live around hydrothermal vents on the sea floor. ...
• For for information about deep-sea hydrothermal vents and the bizarre life forms that live there go visit these websites:.
• Virtual Field Trip to the Thermal Vents .
• NOAA - Thermal Vents Study .
• Giant Tube Worms: On the bottom of the ocean around deep-sea hydrothermal vents, there is a profusion of life that thrives on the hydrogen sulfide (H2S) gas released from the vents. ... These tube worms grow in large clusters around the vents and live inside hard, shell-like protective tubes that attach to the rocks. ...
• Up until the discovery of these incredible bacteria (able to withstand the hottest temperatures of any other living thing on earth), scientists didn't believe it was possible for anything to survive in the extreme environment around deep ocean vents (extreme pressure, high temperature, no sunlight). The discovery of the deep-sea thermal vents and the communities of life they support has completely changed the way we define life, perhaps going a long way to explain how life on earth first began. ...

• Vents.
• Roof vents include the crank-up vent/skylight, refrigerator vent, and plumbing vents. ...
• Ventline Vents and vent parts  .
• Ventline has discontinued the V2012-1 vents w/the square cornered screen frame and trim ring. Vents and trims are limited to quantity on hand.
• The vents that replace these (V2092-1) have a radius corner screen frame and trim ring. ...
• Note that from the roof flange up, these vents are identical. ...
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• Plastic framed roof vents should be inspected carefully for cracks in the frame, both on the roof and from inside, with the inside trim ring removed. ...

• Travel with us to hydrothermal vents in the sunless depths of the world's oceans. ...
• Prepare for your journey of discovery! Learn the Basics: The What, Where, When, Why, How, and Wow of Hydrothermal Vents.
• Discover how scientists locate and study vents using a combination of intellect, instruments, and intuition.
• Explore some of the unsolved mysteries of hydrothermal vents!.
• Meet the brave men and women who study hydrothermal vents. ...
• Test your knowledge of vents, print a certificate of your virtual journey, do fun activities to learn about water pressure and mapping the ocean floor, learn to convert temperatures, and discover how submersibles stay on course.
• Find out about a few of the many fascinating fauna found in vents: giant tube worms, extremophiles, living fossils, and a new domain of life.
• Get the low down on the location and formation of vents, and about a vent chimney named 'Godzilla. ...
• Learn why the more we know about vents, the more important they become. ...
• Read about the generous scientists who helped us, and the sources you can use to continue your voyage of discovery to the exciting world of hydrothermal vents. ...

• Bacteria convert chemicals (from the sulfur-rich fluid spewed out of vents) to energy, in a process called chemosynthesis §. ...
• John Edmond, geochemist, on the cruise that first found hydrothermal vents .
• Creatures of the Thermal Vents - an article by Dawn Stover from the Popular Science Special Oceans Issue .
• Microbiology of Deep-Sea Hydrothermal Vents .
• Scientists witness creation of new hydrothermal vents on seafloor .
• Deep-sea Hydrothermal Vents .
• VENTS Program home page .
• Ocean Hydrothermal Chemistry - including a diagram on Vents Geochemistry .
• Answers to Ask a Scientist Questions - including HYDROTHERMAL VENTS/DEEP SEA BIOLOGY .
• WHOI In Motion - Hydrothermal Vents .
• Fisher Deep-Sea Laboratory - research on chemoautotrophic symbionts and hydrothermal vents .
• The Light at the Bottom of the Ocean - a strange glow from seafloor vents .
• Britannica Online Abstracts on Hydrothermal Vents .
• Ocean Adventure an educational activity about a dive to the hydrothermal vents. ...

• Vents.
• Front and back of the “Vents” trading card.
• Scientists find hydrothermal vents along a global undersea mountain range alive with volcanoes and earthquakes. Super-heated water spews from the vents and sometimes looks like black smoke because of all the minerals and chemicals it carries. Communities of sea creatures thrive near the vents and use the chemicals in the water, rather than sunlight, to live. ...
• Hydrothermal Vents.
• The environment around hydrothermal vents is extremely hostile. ... However, vents host an assortment of amazing animals. Learn about the tubeworms, crabs, and other creatures that thrive around vents. ...

• Cindy VanDover had invited Brenner to join a research expedition to explore undersea hydrothermal vents. Her idea was to get an artist's perspective on the strange and fascinating world that exists around these vents.
• While on Alvin, he marveled at and photographed undersea creatures unknown to humankind until just 25 years ago when the first geothermal vents on the seafloor were discovered off the coast of Oregon. ...
• For more information about hydrothermal vents, visit the National Oceanic and Atmospheric Administration Vents Program Web site. ...

• The setting for this surreal scene is the submarine hydrothermal vents of Earth's mid-ocean spreading ridges. ...
• The water, now rich with dissolved metals, is heated and then gushes back up through the cracks, forming hydrothermal vents. As the hot water -- which can reach temperatures of over 700 degrees Fahrenheit -- escapes from the vents and comes in contact with the near-freezing water of the ocean bottom, the metals quickly rain out of their solution. ...
• Such hydrothermal vents were predicted long before they were first discovered by the submersible Alvin in 1977, as it surveyed the Galapagos Rift, along the eastern Pacific Ocean basin and over a mile and a half below the surface. ...
• Because so much metal is spewed out, hydrothermal vents have been responsible for many of the world's richest ore deposits, like the copper ores mined on the island of Cyprus in the Mediterranean Sea. Indeed, many economic geologists have suggested that active vents -- not just the sites of former ones -- be mined for their massive metallic deposits, although their remote locations might make that difficult. ...
• The vents are also remarkable for their unusual, diverse life forms, like the tube worms, giant clams, and long-necked barnacles. ...
• Some researchers believe that life on Earth began in extreme environments such as these submarine hydrothermal vents. If hydrothermal vents are now (or once were) present on other worlds -- Europa, Jupiter's ice-covered moon, is one possibility, as is Mars, where minerals that on Earth are commonly formed at hydrothermal vents were just discovered -- life might very well have arisen there too.

• Similar phenomena occur under the oceans within midocean ridge volcanoes and are called deep-sea hydrothermal (hot water) vents. ...
• Other vents have been given names based on their appearance, such as Anemone Heaven, Garden of Eden, Snake Pit, Whelks Club, and Beehives. ...
• Deep-sea hydrothermal vents occur along the midocean ridges. Several different vents have been discovered since the first site was found in 1977 near the Galapagos Islands by earth scientists in the small research submersible ALVIN. ... Scientists don't know exactly why some ridges have deep-sea hydrothermal vents and others don't. Two areas of active research are exploration of ocean basins and investigation of the processes that cause deep-sea hydrothermal vents. ...
• Large amounts of heat and chemical mass are transferred from deep within Earth to Earth's surface through deep-sea hydrothermal vents. ... Thus, understanding how deep-sea hydrothermal vents work is critical to understanding the dynamic nature of our planet. ...
• Deep-sea hydrothermal vents support extraordinary ecosystems deep beneath the surface of the oceans. ...
• The life-forms that support the food chain at deep-sea hydrothermal vents also participate in the formation of the minerals that make up the sulfide chimney structures. ...

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