Like many suction feeders, nurse sharks swallow their prey whole. They range in colour from yellowish, reddish, to greyish brown on top, and off-white on their belly. Nurse sharks are solitary, nocturnal fish, and they spend their nights, rifling through sediments at the ocean floor in search of food. The Cookiecutter Shark suctions itself to large fishes and even whales to bite out a piece of flesh to eat.

Juveniles are spotted, but they lose the pattern with age. At night, Nurse Sharks become quite active, demonstrating themselves to be very capable and formidable predators. Nurse Shark Recorded Attacks on Humans: They are typically docile with humans, will bite if provoked or if needed to defend themselves. Nurse sharks (Ginglymostoma cirratum) may in fact be considered the "couch potato" of the shark world. During suction-feeding, subambient pressure is generated by the ventral expansion of the hyoid apparatus and the floor of its buccopharyngeal cavity. The Nurse Shark uses his thick lips to create a suction effect to suck prey out of crevices and holes.

There are no ridges present on the body.

Nurse Sharks are a wonderful, docile species that are nicknamed the “couch potatoes of the ocean.” They are a favorite shark among divers to swim and snorkel with because you can get up close to them and still be very safe. Using their teeth and suction, the shark then extracts the snail from its shell altogether. This powerful suction feeding mechanism combined with the species' nocturnal activity pattern, may allow the nurse shark to successfully prey upon small, active diurnal fish species which are at rest during the overnight hours. Present addresses: (TCT) Department of Zoology, University of Hawaii at Manoa, 2538 McCarthy Hall, Honolulu,Hawaii 96822; and (APS) Department of Ecology and The nurse shark, Ginglymostoma cirratum, is an obligate suction feeder that preys on benthic invertebrates and fish. And based on studies of nurse shark stomachs, they may not have to do much eating to maintain their low energy level. They are suction feeders and can generate enough pressure to suck a queen conch right out of its shell. They have strong suction, and do not let go so their bites can pack a lasting and powerful punch.

They have strong suction, and do not let go so their bites can pack a lasting and powerful punch. Nurse Shark Diet. 9. They are ranked high in human shark bites, in the past as high as 4 th. Kinematic Analysis of Suction Feeding in the Nurse Shark, Ginglymostoma cirratum (Orectolobiformes, Ginglymostomatidae) PHILIP J. MOTTA, ROBERT E. HUETER, TIMOTHY C. TRICAS, AND ADAM P. SUMMERS Inertial suction feeding is known to occur in some sharks, but the sequence and temporal kinematics of head and jaw movements have not been defined. Nurse sharks are known to successfully feed on large, heavy shelled marine snails (i.e. This label, however, is not meant to imply that their lives and behaviors are simple and always relaxed; quite the contrary! Nurse Shark Recorded Attacks on Humans: They are typically docile with humans, will bite if provoked or if needed to defend themselves.

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