What is this animal?

This fish is commonly known as a deep sea "Ghost Shark."

It is not an actual shark, but rather a Chimaera, and is also known as a Rat fish.

It is a cartilaginous fish, cousin to the shark from which they branched off about 400 million years ago. Instead of teeth, this animal has "grinding plates," and a retractable sexual organ on the male's forehead. They have a single gill on their head, and live at depths of 8,500 feet. It typically grows to about 5' in length.

This fish has just been recently caught on camera in the Northern Hemisphere off Hawaii and California. Previously they had only been known from being caught in the Southwestern Pacific Ocean.

This is a video of this rare fish.

This is their classification:

Kingdom: Animalia

Phylum: Chordata

Class: Chondrichthyes

Subclass: Holocephali

Order: Chimaeriformes

Sharks deviate as an Infraclass: Euselachii