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Hydrothermal Vents<br />By Sandra Cash <br />
How were hydrothermal vents found?<br />Hydrothermal vent communities where discovered by Dr. Robert Ballard in the Galapa...
How does Hydrothermal vents form?<br />Hydrothermal vents are one of the most spectacular features on the seafloor. They f...
Map of Hydrothermal Vents<br />
What kind of Animals live in hydrothermal vents? <br />The first organisms to populate the vents are bacteria, then other ...
Food-Web at Hydrothermal Vent Community. <br />
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2.5.2 hydrothermal vents

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2.5.2 hydrothermal vents

  1. 1. Hydrothermal Vents<br />By Sandra Cash <br />
  2. 2. How were hydrothermal vents found?<br />Hydrothermal vent communities where discovered by Dr. Robert Ballard in the Galapagos in 1977. On an excursion in the submersible Alvin, Dr. Robert Ballard and fellow scientists looked out to see a community of worms as large as two meters, clams the size of an American football, white shrimp without eyes, all living around vents with hot flowing water and chimneys spewing dark black "smoke". <br />
  3. 3. How does Hydrothermal vents form?<br />Hydrothermal vents are one of the most spectacular features on the seafloor. They form in places where there is volcanic activity, such as along the Mid-Ocean Ridge. Water seeps through cracks in the seafloor and is heated by molten rock deep below the ocean crust to as high as 400°C. The hot fluid rises to the surface and gushes out of the vent openings. This hydrothermal fluid carries with it dissolved metals and other chemicals from deep beneath the ocean floor. <br />
  4. 4. Map of Hydrothermal Vents<br />
  5. 5. What kind of Animals live in hydrothermal vents? <br />The first organisms to populate the vents are bacteria, then other microorganisms, including amphipods and copepods appear. These are followed by limpets (snails), shrimp, crabs, tube worms, fish, and octopi. Sometime later acorn worms, dandelion-like animals, and other species of shrimp and tube worms add to the expanding community. In their most advanced stages vents are home to mussels, a variety of worms, anemones, and a large population of crabs, as well as many of the earlier colonists.<br />
  6. 6. Food-Web at Hydrothermal Vent Community. <br />

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