Goblin shark (Mitsukurina owstoni): Found in deep waters around the world, the goblin shark is famous for its long, pointed snout and large jaws.
Portuguese dogfish (Centroscyllium fabricii): Found in deep waters of the North Atlantic and Pacific Oceans, the Portuguese dogfish is a small, bottom-dwelling shark with a distinctive black or brown coloration.
Cookiecutter shark (Isistius brasiliensis): Found in all oceans except the Arctic, the cookiecutter shark is a small, deep-water shark that is known for taking circular bites out of larger animals, including other sharks, bony fish, and even whales.
Sixgill shark (Hexanchus griseus): Found in deep waters of the Atlantic and Pacific Oceans, the sixgill shark is a large, powerful shark that can grow up to 6 meters (20 feet) in length.
Gulper shark (Centrophorus uyato): Found in deep waters of the Pacific and Indian Oceans, the gulper shark is a small, bottom-dwelling shark with a large, expandable jaw that it uses to suck in prey.