Furthermore, this shark's inshore habitat renders it susceptible to habitat degradation, destructive fishing practices (e.g. Grey nurse sharks are often seen hovering in or near deep sandy gutters or rocky caves, and in the vicinity of inshore rocky reefs and islands, usually at depths of between 15 and 40 metres. [2] Fossil teeth belonging to this species have been found in the Pirabas Formation of northern Brazil, dating back to the Lower Miocene (23–16 Ma). Habitat of the Nurse Shark This species of shark prefers living in warm, shallow waters that are close to the coastline. Though they have small mouths, that won’t stop them from seizing chunks of prey with their teeth and shaking their heads violently to reduce the size of each piece. Cirratum also derives from Greek, meaning curl or swim. It can be recognised by its flat head and small eyes. As a result of this characteristic, it does not need to swim continuously to breathe. Could it be because of the sucking/slurping sounds it makes while sucking up prey that mimics the sounds of a nursing baby? They mate every two years from late June to the end of July. The eyes are small and face laterally, with prominent ridges over them and smaller spiracles behind. Localized declines or extirpations of the tawny nurse shark have been documented off India and Thailand. Off Australia, this species has been assessed as of Least Concern, as there it is not targeted by fisheries.[1]. Based on morphological similarities, Ginglymostoma is believed to be the sister genus of Nebrius, with both being placed in a clade that also contains the Pseudoginglymostoma brevicaudatum, Rhincodon typus, and Stegostoma fasciatum. The nurse shark is a common inshore bottom-dwelling shark, found in tropical and subtropical waters on the continental and insular shelves. Nurse Shark Habitat The nurse shark is found in geographical distribution along tropical and subtropical coastal waters of the Eastern Atlantic, Eastern Pacific, and Western Atlantic. [2], Many tawny nurse sharks found off the coasts of Japan, Taiwan, and the Ryukyu Islands lack a second dorsal fin. Each tooth resembles a fan, with a broad base rising to a small, sharp central point flanked by 3 or more smaller cusps on both sides. Young sharks have starkly white lower eyelids. This species is ovoviviparous. They can be seen near the coasts of tropical and sub-tropical oceans. However, this species has been infrequently provoked into biting, and merits respect due to its strength, small but sharp teeth, and extremely powerful jaws. Despite these factors, nurse shark is still numerous and widespread in the wild. Nurse shark has grey-brown skin that is, atypical for sharks, smooth. It can be found in the tropical and subtropical waters of the Western and Eastern Atlantic and Eastern Pacific ocean. Nurse sharks are nocturnal animals, spending the day in large inactive groups of up to 40 individuals. Another theory is that the name comes from an archaic word “nusse” which means cat shark. [2], The tawny nurse shark has few natural predators; attacks on this species have been reported from bull sharks (Carcharhinus leucas) and great hammerheads (Sphyrna mokarran), while the related nurse shark has been known to fall prey to tiger sharks (Galeocerdo cuvier) and lemon sharks (Negaprion brevirostris). Juvenile nurse sharks are sometimes sold in the saltwater aquarium trade. With its barbels and highly-developed sense of smell, it can find prey hiding in the sea floor. [5] Based on morphological similarities, Nebrius is believed to be the sister genus of Ginglymostoma, with both being placed in a clade that also contains the short-tail nurse shark (Pseudoginglymostoma brevicaudatum), the whale shark (Rhincodon typus), and the zebra shark (Stegostoma fasciatum). Nurse Shark native habitat, distribution, behavior & aquarium compatibility. Nurse shark has an average lifespan of 25 years. They are also capable of spitting a powerful jet of water into the faces of their captors, making grunting noises in between jets (making the tawny shark one of the few species of sharks to produce a noise);whether this is a deliberate defensive behavior is uncertain. Nurse sharks have a wide geographical distribution, and they prefer the tropical and sub-tropical coastal waters of the Eastern Atlantic, Western Atlantic, and Eastern Pacific. Nurse shark is docile by nature, but it will bite when it is provoked. It's often seen in Florida, especially around the Keys. Nebrodes concolor ogilbyi Whitley, 1934 You can find it in the Western Atlantic, from the Caribbean to Rhode Island and on to southern Brazil. There is no record of a fatal attack from a nurse shark to date. Nurse shark is ovoviviparous species (eggs develop inside the female's body). Nurse sharks have a wide geographical distribution, and they prefer the tropical and sub-tropical coastal waters of the Eastern Atlantic, Western Atlantic, and Eastern Pacific. Compared to the nurse shark, the tawny nurse shark has a more placid disposition and will often allow divers to touch and play with it. 12. In the western Pacific, it occurs from southern Japan and the coast of China to the Philippines, Southeast Asia, and Indonesia, to as far south as the northern coast of Australia. Evidence from morphological similarities shows that the nurse shark (Ginglymostoma) is likely the sister genus of the tawny nurse shark (Nebrius). Adult and large juvenile nurse sharks usually rest in warm waters, from the intertidal zone to rocky and coral reefs, about 70 meters deep.

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