Ocean glider powers itself with water's heat, maps the boring parts of the Caribbean

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This little robot has been cruising the Caribbean for two months now, mapping out currents, temperatures, and other subaquatic trivia. It’s at least partially powered by ocean temperature gradients — the details are at the bottom of the article, I don’t entirely understand it but it sounds cool. It’s doing a boring but essential job and I think they should put a bunch more out there, giving real-time data from all over the place.

Also if one disappeared suddenly it would be a great way to start a watery horror flick. We’ll take recommendations for the title below.

Robot glider harvests ocean heat [BBC]

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