Deep-sea fish are animals that live in the darkness below the sunlit surface waters, that is below the epipelagic or photic zone of the sea. The lanternfish is, by far, the most common deep-sea fish.

Instead, they slide up the front of the fish's face when it shuts its mouth. Its flexible neck allows it to bend its head back and stick out the lower jaw to reach out and grab fish, squid and ...

This predator feeds on deep-sea invertebrates and marine fish ... They wait for prey to pass, with their eyes and mouth ...

This thrilling deep-sea fish was voted the world's ugliest animal ... It can't even fully close its mouth. More from News ...

Discover the fascinating world of animals that defy norms by giving birth through their mouths. Nature’s wonders never cease to amaze!

Why it's awesome: Earth's oceans are home to many secretive and unusual creatures that humans rarely see — including giant ...

Miles below, a deep-sea fish approached the camera’s bait then, changing its mind, swam backward to escape. The footage turned out to be a first-of-its-kind sighting — but it wasn’t the last.