6 gill shark 

Skin color ranges from tan to brown to black. It has a light colored lateral line down the sides and on the fins' edges. There are darker colored spots on the sides. The general shape is a heavy, powerful body that has a broad head with small eyes. The pupils are black and the eye color is a fluorescent blue green. The blunt nose six gill shark can grow to 4.8 m (16 ft). Adult males generally average between 3.1–3.3 m (10–11 ft), while adult females average, The blunt nose six gill shark is a member of the Hexanchidae family. Many of its relatives areextinct - there are more closely related relatives in the fossil record than there are living species. The living species that are closest genetically include the dogfish, the Greenland shark, as well as other six- and sevengilled sharks. Some of the shark's relatives date back to 200 million years ago. This shark is a notable species due to both its primitive and current physical characteristics. what I think is the 6 gill can swim th down deep