Facts about Sharpnose Sevengill Shark, "Scientific name for Sharpnose Sevengill Shark is Heptranchias perlo". The Sharpnose Sevengill Shark are also known as the one finned shark, the slender sevengill and sharp snouted sevengill. It is the only species in the Heptranchias genus, though not the only one in the Hexanchidae family.
The Sharpnose Sevengill Shark live in deep temperate waters almost all over the world, though not in any high density. They only region in which they are not found is in the northeastern Pacific Ocean.
The sharpnose sevengill shark has seven pairs of gills, while most sharks have five sets of gills. They are two to four feet long (.60 to 1.22 meters), though specimens near five feet long (1.32 meters) have been caught.
Sharpnose sevengill sharks have a single small dorsal fin that has a small, rounded tip. This fin helps it avoid rolling in the water. Their caudal peduncle is much longer than in other shark species.
The Sharpnose Sevengill Shark tend to swim at a thousand to two thousand feet of depth. Because of their deep water lifestyle, they have very large, florescent green eyes. Sharpnose sevengill sharks have around ten teeth on their top jaw and five teeth on the lower jaw. The upper teeth are mostly hook-like, while the bottom teeth are mostly comb-shaped. The Sharpnose sevengill shark bodies are brown or olive on the top and paler on the bottom.
The Sharpnose sevengill shark are one of the top predators in their layer of the ocean. These sharks mostly eat invertebrates like squids and smaller fish, mostly ray-finned fish. However, they are also preyed upon by larger species of shark. Unlike some species of sharks, they are rarely hunted by humans. The Sharpnose sevengill shark do end up in the by-catch of long-line fishing. When caught, they are generally used for fish meal.
The sharpnose sevengill shark is an ovoviviparous shark, giving birth to litters of ten to twenty “pups”. Males are on average slightly smaller than females.
There are over 400 types of sharks, Sharks have the most powerful jaws on on earth. Sharpnose Sevengill Sharks jaws, both the upper and lower jaws move. Sharpnose Sevengill Sharks skin is made of denticles instead of like other fish scales. The denticles are constructed like hard, sharp teeth (tooth-like projection) and this helps to protect the Sharpnose Sevengill Shark from being injury. The Sharpnose Sevengill Shark is carnivores meaning: an animal that feeds on flesh (Meat).