translation.en: If you were to descend into the 95 percent of the biosphere that's livable, it would quickly become pitch black, interrupted only by pinpoints of light from bioluminescent organisms.
translation.zh: 如果您要把范围缩小到 可生存生物圈的95%， 它将很快成为漆黑， 只会有来自于发光生物的 星星点点的光亮。