A team of researchers with the California Academy of Sciences discovered a brand new species of fish — and somehow missed a huge shark swimming right on top of them. The whole underwater encounter was caught on video. And the best part? The divers speak exclusively in chipmunk voices.
That’s because the divers use a rebreather gas mixture that lets them dive deeper and spend more time underwater than a recreational diver can, Katie Jewett, a science writer for the California Academy of Sciences, tells The Verge in an email. And that gas mixture contains helium. “Hence, the chipmunk voices,” Jewett says. If Alvin and the Chipmunks decided to become scientific divers, this is what it would sound like.