Billions in the Dark: The Secret Lives of Mesopelagic Fish
It’s easy to forget that beneath the sunlit waves, just past where the ocean’s blue turns to jet-black, lies a world teeming with life—one we barely know. Picture an endless twilight, stretching around the globe, where billions of mysterious fish drift, flicker, and hunt in the cold obscurity. The mesopelagic zone, also called the “twilight ...











