Nurse sharks are carnivorous and consume a variety of sea-dwelling creatures. Although they have been known to bite humans when provoked, they are not man-eaters. They consume a variety of fish, marine invertebrates and crustaceans small enough to fit in their mouths.Continue Reading
Nurse sharks eat everything from shell fish to octopi, and their success as a species is partly due to their widely varied diet. These slow-moving, bottom-dwelling sharks suction-feed in crevices during the night or patrol flats and sand banks looking for crabs, crustaceans and octopi. They find their prey by swimming close to the bottom, grazing it with two oral barbels. When they sense prey, they strike quickly, plunging onto the bottom and sucking in their prey along with sand, silt and other debris. They filter out the unwanted particles through their powerful gills while consuming their prey.
Although nurse sharks have comparatively small teeth, they are razor-sharp, and the jaws are incredibly powerful allowing them to easily crush the protective shells of crustaceans including crabs and conch. The nurse shark, like other sharks, loses teeth frequently, but these are replaced by a new row that moves forward from the back of the mouth while the front-most row sloughs away, keeping its teeth sharp and ready to crush shells.Learn more about Sharks
Hammerhead sharks are carnivorous and eat a variety of fish, although stingrays are the preferred prey. Hammerhead sharks take advantage of their wide, flat heads to pin down stingrays and other bottom dwelling fish before delivering a fatal bite. Fisherman have caught hammerheads that have reportedly had numerous stingray barbs in their flesh, evidence that the hammerhead hunts stingrays consistently.Full Answer >
Mako sharks prey on a wide variety of pelagic fishes, including mackerels, herrings and salmon. Examination of specific populations from Cape Hatteras to the Grand Banks of Newfoundland indicates that the bluefish is preferred by the shortfin mako.Full Answer >
There are approximately 470 known species of shark in the world, but it's impossible to count the exact number of individual sharks on the planet. World Wildlife Fund estimates that more than 100 million sharks are killed each year for their fins.Full Answer >
On average, great white sharks grow to be 15 feet long. Females typically reach a length of about 16 feet, while males reach a length of 11 to 13 feet.Full Answer >