Below the ocean’s surface is a mysterious world that accounts for over 95 percent of Earth’s living space—it could hide 20 Washington Monuments stacked on top of each other. But the deep sea remains largely unexplored. As you dive down through this vast living space you notice that light starts fading rapidly. By 650 feet (200 m) all the light is gone to our eyes and the temperature has dropped dramatically. Dive deeper and the weight of the water above continues to accumulate to a massive crushing force. Any light still filtering down has diminished to appear completely black, leaving only animals and bacteria to produce the light found here. By 13,000 feet (4,000 meters), the temperature hovers just below the temperature of your refridgerator. At this depth, we’ve reached the average depth of the deep-sea floor, a place that may start to get a little muddy. The further we dive down from the surface, the less new food is available, making the fight to survive that much more challenging. Despite these harsh conditions, there is life—an astounding variety of creatures that will boggle your mind. You can’t dive to the deep ocean on your own, of course, but scientists have a variety of sophisticated technologies to explore this vast frontier.

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3 years ago