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How do you explore an ocean world? The next phase is the development of underwater robots

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NASA is working on a mission concept called SWIM, or Sensing With Independent Micro-swimmers .

The idea is to develop a whole swarm of underwater robots that can work together to explore large areas.

Each robot would be tiny — about the size of a mobile phone — and would be able to propel itself through the water to seek information.

A prototype has already been tested in underwater conditions here on Earth .

SWIM concept is currently under development as part of NASA 's Innovative Advanced Concepts ( NIAC ) program.

Engineers at Georgia Tech in Atlanta are working on a single sensor, which can detect factors like temperature, pressure, chemical makeup, and more.

Software that allows a swarm to act cohesively is also in development.