translation.en: Bill Lange: We tend to forget about the fact that the ocean is miles deep on average, and that we're real familiar with the animals that are in the first 200 or 300 feet, but we're not familiar with what exists from there all the way down to the bottom.
translation.zh: 比尔.兰格：我们通常忘了海洋平均有好几英里深， 我们对于 两三百尺深处的动物很了解， 但从那往下就不太知道了。