The incredible shark that hasn't changed in 80 million years, the frilled shark, is another otherworldly deep-sea creature with an eel-like body, slithering through the depths more like a serpent ...

The frilled shark (Chlamydoselachus anguineus ... and has sensitive eyes to detect bioluminescence from other creatures. The deep-sea lizardfish is also hermaphroditic, meaning it has both ...

The ocean holds many bizarre deep-sea monsters. As you dive 140 meters underwater, you might see a megamouth shark. Sure, they look scary, but those 50 rows of teeth are for filtering krill.

Here is a list of eight of the world's rarest animals. This critically endangered porpoise, found only in the Gulf of California, has fewer than 30 individuals remaining, making it the rarest marine ...

Their focus was on deep-sea animals living at least 700 feet down ... Painted swellsharks, or Cephaloscyllium pictum, are a poorly known shark species first discovered at fish markets in Indonesia ...