From deadly 'living fossils' to glowing sea angels, the ocean floor is home to creatures almost alien to us. Here are five incredible creatures straight from the deep.

In fact, on one occasion, scientists monitoring the creature with a remotely operated vehicle (ROV) saw B. caudactylus separate one of its glowing "fingers ... on deep-sea research technology.

Many of the rarely seen deep-ocean animals that lurk in the darkest, most inhospitable places on this planet look like aliens from ... Other strange deep-sea creatures use bioluminescence to ...

Scientists found a bioluminescent deep ... as we spend more time in the deep sea,” Haddock, one of the study co-authors, said in the release. “Deep-sea animals capture the imagination ...

The mysterious creature also hides from predators in plain sight, taking advantage of its transparent body. If it feels threatened, however, the sea slug will light up with bioluminescence to ...