According to scientific estimates, more than 95% of Earth’s oceans have never been observed. As SciTechDaily points out, this means that we’ve seen less of our own planet’s oceans than we have the surface of Mars. The biggest challenge in exploring the oceans, though, is powering cameras, particularly for a lengthy amount of time. They typically have to be tethered to research vessels or require regular trips out to swap batteries.
Researchers at MIT, though, have taken a pretty big leap in overcoming this hurdle by developing a battery-free, wireless underwater camera that they say is around 100,000 times more energy-efficient than other underwater cameras. It shoots photos in colour, even in the deep, dark underwater depths and transmits them wirelessly through the water.