• Oceans are deep, dark, and frigid.
  • All but the very top surface is under extraordinarily high pressure.
  • Most oceanic research requires accessing greater depths.
  • Rovers, like the one pictured above, allow scientists to remotely visit places that are too inhospitable for human life.
  • The human operated vehicle, Alvin can dive up to 4,500 meters beneath the ocean surface and has made more than 5,000 dives since 1964.
  • Scientists use sound waves to make bathymetric maps of water bodies.
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