Findings:
- The Underwater Pyramids of Yonaguni Island
- underwater
- Underwater Basketweaving
- God Lives Underwater
- Naval Underwater Warfare Center
- The Joy of Pair Bonding: The Underwater Metaphor
- underwater freeze tag
- underwater hockey
- Underwater Guy
- Rhesus Monkeys and Dormant Underwater Volcanos: the "I can't believe there's nobody here from Madagascar" E2 Madagascar get-together
- Life Underwater
- Underwater World
- 20,000 Leagues Under the Sea: 17: An Underwater Forest
- Radcliffe Observatory
- With my head underwater, heart beating in my ears
- Semi autonomous underwater vehicle
- The Underwater Menace
- underwater nativity set
- Helicopter Underwater Escape Training
- underwater (user)
- underwater basket weaving
- Breathing Underwater
- underwater mortgage
- underwater moonlight
- Ukraine National Underwater Cultural Heritage Site #2064
- Hat Creek Observatory
- Armagh Observatory
- Observatory
- Barnard Observatory
- Sudbury Neutrino Observatory
- Arecibo Observatory
- Royal Greenwich Observatory
- Cerro Tololo Interamerican Observatory
- Paris Observatory
- Mount Stromlo Observatory
- Kirkwood Observatory
- Laser Interferometer Gravity-wave Observatory
- Lick Observatory
- Compton Gamma Ray Observatory
- Yerkes Observatory
- South African Astronomical Observatory
- Large Binocular Telescope Observatory
- Chandra X-Ray Observatory
- Palomar Observatory
- Vatican Observatory
- U.S. Naval Observatory
- Harvard College Observatory
- Kitt Peak National Observatory
- United States Naval Observatory
- From the Earth to the Moon: 4: Reply from the Observatory of Cambridge
- ghostland observatory
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