In addition to size, an array of shapes, colors, behaviors and abilities exists among sharks. The deep sea holds many species in surprising forms about which relatively little is known. Let's examine some of this diversity. The great white shark , Carcharodon carcharias , is found in both warm and cool temperate seas, especially along the continents and around islands. Large, serrated teeth and powerful jaws allow it to eat almost any animal, including sea turtles and marine mammals.
Great whites have a slaty brown or charcoal topside and white underside.
Bull sharks , Carcharhinus leucas , with teeth resembling the great white's, cruise along the continental shelves to eat almost anything but prefer feeding in shallow tropical waters. This grey shark with an off-white underside has a wide, blunt heard. The bull shark is unique among shark species for its adaptability to freshwater. These sharks inhabit Lake Nicaragua and have been found 2,000 miles inland in freshwater rivers. The blue shark , Prionace glauca , has extremely long pectoral fins and a long pointed snout.