Watch this robot fish swim, thanks to artificial blood

Move over Sophia, this robot has something you don’t have: blood. Researchers have created a robotic silicone lionfish filled with battery fluid researchers have called “robot blood.” The artificial blood gives the robot fish the power to move its fins and swim for up to 36 hours straight before needing a charge. The approach, published Wednesday in Nature, does not need heavy batteries to power the machine, making the robot more autonomous. Similar robots could help explore the deep sea or even perform search and rescue missions, Nature reports.

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