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.Know More
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.
Sharks are at the top of their respective food chain and are not usually hunted by other animals; however, sharks have been known to eat other sharks from time to time. There have also been a few sightings of moray eels eating small sharks.Full Answer >
A 2013 study, detailed by Discovery, explains that great whites have a faster metabolism than previously thought and probably feed every few days. The study indicated that the amount of energy required by a great white was equivalent to eating a seal pup every three days.Full Answer >
Tiger sharks will eat almost anything, such as stingrays, birds, sea snakes and seals, as they are scavengers in the ocean and are equipped with serrated razor-sharp teeth that enable them to break sea turtle shells as well as clams. The tiger shark also has a reputation as a maneater because it is surpassed only by the great white shark in the number of human attacks each year.Full Answer >
Bull sharks primarily eat bony fish and other sharks, including juvenile members of their own species. Less commonly, they also eat sea turtles, dolphins, sea birds, squid and swimming land mammals. In addition to marine habitats, they are the only shark species that regularly occurs in fresh water.Full Answer >