Ten metres beneath the South China Sea, scientists have found an unlikely place to generate power from the sun. ADVERTISEMENT ADVERTISEMENT Last week, researchers announced that they had successfully tested solar panels at underwater depths previously considered impractical for the technology. Designed to capture the wavelengths of sunlight that can pass through seawater, the panels could eventually keep underwater equipment running for longer without relying just on batteries, they argue. During a two-hour trial near the Weizhou Islands, off the southern coast of mainland China, the panels generated power from sunlight at a depth of 10 metres. Lab tests suggest…