deep ocean
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Eyes From the 'Twilight Zone': A Study of Deep-Sea Sharks
In an effort to learn more about the mysterious deep, researchers are taking a closer look at one of its primary predators, deep sea sharks. In a recent study, experts stare into - or rather, at - the eyes of the lanternshark, a bioluminescent shark that stalks waters 200 to 1,000 meters below the ocean's surface.