In the deep ocean habitats that are very different from those found in shallow coastal waters or in the first 200 meters deep. Therefore, the animals found are also very different. Animals that have had to adapt to high pressure, very low temperatures and of course the infinite darkness.
We saw the Pelican eel, a monster of the deep. But now I want to show other animals living in the depths: Giant Hatchetfish or Greater Silver Hatchetfish (Argyropelecus gigas, the image).
This animal "friendly appearance" is located at depths above 600 meters. With his dark eyes, looks up and detects the silhouettes of prey that can be seen in contrast to the dim light (invisible to us) that comes from the surface.
Not only that, if we thought that another predator even more terrible than the Giant Hatchetfish the same technique used to detect this and other fish, we would realize a feature of survival and adaptability of Argyropelecus own gigs ... is INVISIBLE. It is capable of producing, through his body photophore (producing light) blue reflections similar to those seen if you look at the surface, making it completely invisible.
Finally, think not that this little fish on tender stalks you in the depths. It is harmless to people, because although the species has the word giant, no larger than 15 cm. Distributed by the deep abyssal Atlantic Ocean and the Pacific.
We often call:
THE PHANTOM OF THE OCEAN.