A submersible floating next to ice in the Antarctic ocean
The Ran submersible navigates icy waters to explore huge glaciers.
  • An uncrewed submersible that belongs to the University of Gothenburg disappeared in Antarctica.
  • The submersible was exploring the Thwaites Glacier to study its potential effects on sea-level rise.
  • Despite search efforts, the submersible has not been found.

A submersible, named Ran, disappeared last month after diving under Antarctica. The 23-foot-long instrument was just one of three scientific submersibles of its kind.