Underwater jellyfish spy is now a 170-pound monster

The Navy must really like their spy jellyfish. We knew they were exploring jello territory last year with a team from Virginia Tech, and this year, with the five-year grant from the Office of Naval Research, it looks like RoboJelly has a new name as well: Cyro.

It has also ballooned from a palm-sized prototype to a 170-pound sea monster that is all of 5 foot 7 inches, with a nickel metal hydride battery lasting up to four hours of swim time with each charge.

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