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

                                                                           The bull shark


       the bull shark is a salt or fresh water shark it is aggressive they travel far up rivers the bull shark has the bull and grate white have the same similarities in bite marks, the bull shark swims up rivers and attack. bull sharks will hunt in pairs of two they get their name by their the depth they are mostly found at the death of 150meters but dos not go no more than 30meters, they travel up the Mississippi river although their have ben less fresh water attacks they are responsible for near shore shark attacks my opinion is the bull shark is the worlds scent deadliest shark other than the grate white

                                                                        the tiger shark
                    
                        

                                     the tiger shark another name for it is the sea tiger the tiger shark is mostly a nocturnal hunter its diet includes crab, fish, seals, birds, squid ,turtles, sea snakes,The tiger shark can grow up to (16)ft long and like tropical waters.they have been known to attack humans and can disappear in the water and they are not likely to swim away after biting a human.    

disappearing tiger shark

                                                             grate whighte shark
         
The mighty grate white shark it has a pointed snout and it is a man eating shark it is a large shark the length
     of the shark is 20ft,the life span of over 30 years the weight is up to(5,000lb) the shark reaches maturity around the age 15 the great white is one of the worlds largest predators in the sea.