Here are some useful links if you are interested in learning more about Riftia pachyptila and hydrothermal vent ecosystems:
ARKive – A general description of Riftia Pachyptila, including information on its biology, range, habitat, threats, and conservation. Includes photos and videos.
Woods Hole Oceanographic Institute – What are hydrothermal vents? and Why do they matter?
Marine Conservation Society – A description of some of the animals associated with hydrothermal vent ecosystems.
BBC Nature – Video clips from BBC documentaries The Living Planet, The Blue Planet and Planet Earth showing Hydrothermal vents and some of the associated fauna.
BBC Earth – Information and videos on mid ocean ridges; underwater areas of tectonic activity where hydrothermal vent sites are formed
National Oceanic and Atmospheric Administration – Information on DSV (deep sea vessel) Alvin, The research vessel used by scientists that discovered the first hydrothermal vents in 1977.
National Oceanic and Atmospheric Administration – A description of chemosynthesis and the difference between photosynthesis and chemosynthesis
National Geographic – Video showing the historic discovery of hydrothermal vents, description of chemosynthesis, how vents are formed and their significance in the ocean.