Spot a Shark is a non-profit dive community research project that has been established in conjunction with the Marine Ecology Group at Macquarie University.
The origin of the name "nurse shark" is unclear. They are often found in shallow subtropical waters and are known to inhabit and return to specific nursery sites for breeding. And based on studies of nurse shark stomachs, they may not have to do much eating to maintain their low energy level. Male sharks reach sexual maturity at 4 - 6 years of age, and females at 6 - 8 years. However, at night they leave the shelter and hunt over the ocean bottom, often ranging far from their shelter. Each grey nurse shark has a series of pigmentation spots on either side of their body. Grey Nurse have the lowest rate of any shark, with females only reproducing once every two years. Sharks can detect very weak electrical currents. During the day, these guys will hide in caves, rocks or reefs. Each of these leads to an organ (ampula of Lorenzini) which can detect electricity. This extra sense gives sharks the ability to detect and attack prey at close range without needing to see the prey … Commonwealth: east coast population - Critically Endangered; west coast population - Vulnerable (Environment Protection and Biodiversity Conservation Act 1999) It is the only shark known to gulp air and store it in the stomach, allowing the shark to m… Towards the end of that gestation period, the more developed embryos turn on their developed siblings and cannibalize them while still the uterus. Lifestyle of the Grey Nurse Shark Grey Nurse Sharks are more active at night, when they feed upon fish, smaller sharks, rays, squid and crustaceans. During the day, they take shelter near rocks, overhangs, caves and reefs often at relatively shallow depths (<20 m). Sand tigers hunt by stealth. We will be utilizing a computer based software program to identify individual sharks. Because the nurse shark doesn't do a whole lot of moving around, it might be hard to believe that they can catch any prey. They come out at night to hunt a wide … The underside of the Grey Nurse Shark's snout is dotted with pores. This is the typical environment where divers encounter sand tigers, hovering just above the bottom in large sandy gutters and caves. Submit your photos to help with research. Often feeding at night, these sharks use electroreceptors to find their main source of prey: fish. Gestation takes place over a 9 – 12 month period, with the young usually born in winter. The lemon shark (Negaprion brevirostris) is a species of shark from the family Carcharhinidae.Lemon sharks can grow to 3.4 metres (11 ft) in length. It may come from the sucking sound they make when hunting for prey in the sand, which vaguely resembles that of a nursing baby. The sand tiger shark is a nocturnalfeeder. Both males and females mature at about 2.2m and reach a …
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The origin of the name "nurse shark" is unclear. They are often found in shallow subtropical waters and are known to inhabit and return to specific nursery sites for breeding. And based on studies of nurse shark stomachs, they may not have to do much eating to maintain their low energy level. Male sharks reach sexual maturity at 4 - 6 years of age, and females at 6 - 8 years. However, at night they leave the shelter and hunt over the ocean bottom, often ranging far from their shelter. Each grey nurse shark has a series of pigmentation spots on either side of their body. Grey Nurse have the lowest rate of any shark, with females only reproducing once every two years. Sharks can detect very weak electrical currents. During the day, these guys will hide in caves, rocks or reefs. Each of these leads to an organ (ampula of Lorenzini) which can detect electricity. This extra sense gives sharks the ability to detect and attack prey at close range without needing to see the prey … Commonwealth: east coast population - Critically Endangered; west coast population - Vulnerable (Environment Protection and Biodiversity Conservation Act 1999) It is the only shark known to gulp air and store it in the stomach, allowing the shark to m… Towards the end of that gestation period, the more developed embryos turn on their developed siblings and cannibalize them while still the uterus. Lifestyle of the Grey Nurse Shark Grey Nurse Sharks are more active at night, when they feed upon fish, smaller sharks, rays, squid and crustaceans. During the day, they take shelter near rocks, overhangs, caves and reefs often at relatively shallow depths (<20 m). Sand tigers hunt by stealth. We will be utilizing a computer based software program to identify individual sharks. Because the nurse shark doesn't do a whole lot of moving around, it might be hard to believe that they can catch any prey. They come out at night to hunt a wide … The underside of the Grey Nurse Shark's snout is dotted with pores. This is the typical environment where divers encounter sand tigers, hovering just above the bottom in large sandy gutters and caves. Submit your photos to help with research. Often feeding at night, these sharks use electroreceptors to find their main source of prey: fish. Gestation takes place over a 9 – 12 month period, with the young usually born in winter. The lemon shark (Negaprion brevirostris) is a species of shark from the family Carcharhinidae.Lemon sharks can grow to 3.4 metres (11 ft) in length. It may come from the sucking sound they make when hunting for prey in the sand, which vaguely resembles that of a nursing baby. The sand tiger shark is a nocturnalfeeder. Both males and females mature at about 2.2m and reach a …
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