Nurse sharks are exceptionally sedentary unlike most other shark species. Nurse sharks show strong site fidelity (typical of reef sharks), and it is one of the few shark species known to exhibit mating site fidelity, as they will return to the same breeding grounds time and time again.
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The origin of the name "nurse shark" is unclear. It may come from the sucking sound they make when hunting for prey in the sand, which vaguely resembles that of a nursing baby.
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Nurse Shark Ginglymostoma cirratum Introduction to Nurse Shark. Many people don’t realize that Nurse Sharks are really a shark they see. Due to the unique design of the body where the back half of it is so long, they often think it is some type of fish that they happen to see in the water.
The grey nurse shark (Carcharias taurus) is one of Australia's most endangered marine species. The greynurse shark has a fusiform, stout bronze body, pale undersurface and brownish spots appear on the upper body and tail fin.
A Physical Description of the Nurse Shark The Teeth of the Nurse Shark. The nurse shark is something of a large shark and while they more commonly grow to be anywhere from 7 1/2 feet to 9 3/4 feet long, some individuals in the species have been seen as large as 14 feet long.
The Nurse Shark, also known as the Ginglymostoma cirratum, gets its name from Greek Roots. It may come from the strange sucking sounds they make when searching for prey in the sand. As with all sharks, this giant fish is incredibly interesting and very important to the delicate marine ecosystem, especially near fragile coral reefs.
Shark and rays are aggressive predators and rely on smell to detect prey. They can even be trained to be hand fed. Smaller aquarium sharks like the cat sharks are very popular. They can be purchased very small or even in egg sacks that will hatch sometimes within a month. Keep your sharks and rays with larger semi-aggressive fish.
Nurse sharks tend to live to around 25 years of age by which time the nurse shark is often over 4 m in length. When the baby nurse sharks are born, they tend to be around 30 cm long and are already fully developed. The darker skin of the baby nurse sharks tends to fade quickly as they age.