Best experience ever! The Health Benefits of Sharks - The Atlantic. This allows the shark to move quicker, and make sharp turns, an essential skill when in hot pursuit of darting prey. Sharks that feed on mammals and large prey have triangular, serrated upper teeth and pointed lower teeth. He acknowledges that this discovery about early sharks is interesting. Finding a shark at Gogo has been a bit of a holy grail for fish palaeontologists as we all expected a shark from this site would have extraordinarily good preservation. All too often we tend to view these majestic creatures as rows of razor sharp teeth and not much else, when in reality, they are complex animals that are sadly often misperceived. But the simple truth is that most sharks of this age are known only from isolated teeth or scales. — Professor Per Ahlberg is a palaeontologist at Uppsala University in Sweden who was not involved in the study but is an expert on early fish evolution. Great white sharks have a heightened sense of smell and can detect a single drop of blood in the ocean from 5 miles away. I went in thinking I’d only swim with the usual/normal sharks but after 4 weeks, THE GREAT WHITE SHARK FINALLY MADE A COMEBACK when I was in the cage with other tourists. The loss of bone in their skeleton is also supported by the fact the oldest and most basal of all jawed vertebrates, the placoderms, had heavy bony skeletons. Although mostly incomplete, the specimen comprised the complete lower jaws, shoulder girdles which support the pectoral fins, some isolated gill-arch elements and many small teeth and scales. How long can a great white shark be? In … Sharks don't have bones and a skeleton. Ainee S. When you go shark cage diving in Cape Town or Gansbaai, it’s not only an exhilarating experience, but also an educational one. Asked by Wiki User. They really do it out of passion and you can tell. This photo of me holding the Gogo shark was snapped minutes after the discovery on July 7, 2005. Answer: Sharks skeleton is made of cartilage instead of bones to have a lighter weight which allows them to go up and down quickly in the ocean without a lot of effort to stay afloat. Gogoselachus was clearly a fast-swimming predator that hunted other fishes using its jagged teeth to snare prey. Great white sharks are opportunistic, but, like other predators, individual white sharks likely become proficient at taking a few prey species and other prey species only irregularly. Cartilage is a type of connective tissue strong enough to give support but softer than true bone. Oxford, Oxfordshire, Copyright © 2010–2020, The Conversation Trust (UK) Limited. How Many Bones Do Sharks Have And Why The Answer Is None. Modern sharks began to appear about 100 million years ago. Food was also served when we got back. But they also seem to like sea lions, some species of dolphins (mostly Humpback Dolphins) and select species of whales. Sharks do not chew their food, but gulp it down in huge chunks. September 2020, We did the trip with family and friends..half of us did the dive and half of us observed,which was just as cool..the crew were professional, informative and fun..we saw alot of sharks and even a seal joined us..experience of a lifetime...thanks to all from the breakfast to the end of lunch... everything was perfect! I would highly recommend the great white shark diving company you will not be disappointed!!! No, sharks do not have bones. Top, the Gogo shark specimen in rock as it was found. Yes, the frilled shark is really freaky. Narissa - S.A - Quora. No sharks do not have bones. The skeleton of a shark differs markedly from the skeleton of teleost fishes – there are no bones in it and it is completely formed from cartilaginous tissues. The majority of the world’s Great White sharks live off of the coast of Dyer Island, South Africa. We felt like more than just customers! Paul was really welcoming and the other Paul, in charge on the boat, was a really fun guide and explained well about sharks. I was overjoyed at finding the first fossil shark in more than 60 years of collecting from the site. We enjoyed the amazing visit that will never be forgotten. Kim H. But this idea has just been challenged due to the discovery, announced today in the journal PLOS One, of a 380-million-year-old fossil shark from Western Australia named Gogoselachus lynbeazleyae that shows remnant bone cells present in its cartilaginous skeleton. Notwithstanding possessing too many teeth, the great white sharks have no bones. In addition, the cartilage is more flexible than bone. The shape of the shark’s tooth is largely determined by its prey – if it feeds on crustaceans and molluscs, its teeth will be flattened and powerful, while if it feeds on fish, its teeth will be needle-like and pointed. Gogo has a diverse fauna of many kinds of ancient armoured placoderm fishes as well as early bony fishes (osteichthyans), but no sharks. John Long, Flinders University, and Carole Burrow, Queensland Museum, Aston Talks: Feeding, eating and mealtimes: the psychology of children’s eating behaviour, Philosophy, disability and social change (online conference). What Gogoselachus might have looked like, as restored from the scant fossil remains. The great white is an epipelagic fish, observed mostly in the presence of rich game, such as fur seals ( Arctocephalus ssp. It’s light, flexible, and it heals faster than bone. How do they swim? Sharks make some bone material for their teeth and fin spines but for the most part, they are made up of cartilage, the same soft flexible material that makes up the end of a human nose. The sharks we were fortunate to see, put on quite a show too. This means that, if pulled out of the water, the weight of the shark’s body … Sharks do have skeletons, but they’re made of cartilage rather than bone. I was surprised to find the cartilaginous elements of the shark easily came out of the rock. A basihyal is an immovable object, very short and thick, and it is possible that the only real use of it is to support some of the bones that connect with the shark's gills. The Conversation UK receives funding from these organisations. Great White Sharks. Examining the specimen with my hand lens revealed the teeth had multiple cusps fixed onto a broad bony base – a feature unique to sharks at this time. By flapping their wings like a bird. Great white sharks can be ferocious predators, but one of these giant fish overestimated its hunting abilities when it crunched down on a sea turtle and then choked to death, according to a … There are countless theories as to why Great White Sharks have not yet been successfully bred and kept in captivity. Cartilage is robust but not as dense as bone which gives them a great flexibility that allows them … Shark - Wikipedia. White shark diving in South Africa is important, predominantly because it assists in conserving the apex predators exposing people to them and correcting the ‘Jaws complex.’ This movie was extremely damaging to the sharks’ reputation, making them out to be ruthless killing machines, when in fact it is not programmed into their nature to recognise humans as prey. 500. Today when we see the sleek form of a shark in water we see a triumph of evolution, a masterpiece of fine tuning at the cellular level, resulting in their current ecological success. Great White Shark Feeding. It fills an ecological gap in our understanding of the Gogo reef. This study further supports the idea that sharks must have evolved from bony primitive ancestors and lost their bone early on in the race as they acquired their predatory body shape. We were their first trip back at sea since lockdown started and they did not disappoint. Because the shark’s skeleton contains no bone, but only cartilage, areas requiring extra strength and support, like the jaw, need special adaptations. 3. Although they do prefer to live in cooler waters with temperatures ranging from 54-75° Fahrenheit. We simply have too many bones for a shark to digest and they much prefer large, fatty animals like seals. I have never experienced a more well organized and FUN team. But because their skeletons are made of cartilage much of their early fossil record is poor. It’s why babies have rubbery legs when they begin to walk, as the bones haven’t fully ossified around the cartilage cores. Older but quite incomplete fossil sharks are known, such as Doliodus from Canada, around 400 million years old. Whale sharks don't have bones, instead they have what? In the most recent phylogenetic analysis of lower vertebrates, the placoderms appear as being basal – or at a common evolutionary level – to sharks. All too often we tend to view these majestic creatures as rows of razor sharp teeth and not much else, when in reality, they are complex animals that are sadly often misperceived. Even more, the flexibility of cartilage gives sharks the capability to bend more elastically than boned fishes. Modern sharks most likely evolved their lighter cartilaginous skeletons to become faster swimmers, to evade predators and swiftly catch their prey. Notwithstanding possessing too many teeth, the great white sharks have no bones. 300. UNFORGETTABLE EXPERIENCE EVER! Despite the successes of the recent five week record and previous 16 day survival of a Great White Shark in captivity, a single Great White Shark has never survived in a tank in an aquarium. The replacement teeth are located on the inside of the jaw, within a groove and they consistently shift forwards to replace the old teeth. Do sharks have bones? After the brief courtship and one-night stand with the male, the female shark is left to carry the fertilized eggs in her oviduct, or womb.Gestation periods for sharks vary, from about five to six months to two years [sources: Carrier, Oregon Coast Aquarium].The spiny dogfish shark has the longest gestation period, not just of sharks, but of all vertebrates, at 24 months [source: Bester]. Charlene H This reminds me of the ancient Romans, who were ( wrongly ) thought to use vomitoriums to … — Aston Talks: Feeding, eating and mealtimes: the psychology of children’s eating behaviour Finding a very rare fossil in the field gives one a kind of euphoric rush and I recall it well the day I found the Gogo shark, at 11am on July 7, 2005. It should reveal something new about early shark evolution, as nearly all other sharks of this age were flattened and poorly preserved. The atmosphere was electric! November 2019, © White Shark Diving Company 2016-2020 |, Sawfish – The World’s Most Threatened Fish, Myth-Busting – 5 Common Misconceptions About Great Whites. — Wiki User Answered . #DOWNDIVERS :) September 2020, My fiancé and I had the best experience! No, sharks and all other fishes belonging to the class Chondrichthyes that lack true bones. The main framework of their bodies is made from cartilage, which is the same substance our noses and ears are made from. But there are other 'living fossils' that are just as weird. That’s one explanation why their teeth break out quickly because they’re not attached to bones like ours. Interestingly, sharks have no ribs. Although the skeleton of sharks is cartilaginous, it has the necessary rigidity. Cartilage doesn’t preserve as well as bones, so the early shark fossil records are based mostly on isolated scales and teeth. Flinders University provides funding as a member of The Conversation AU. Unlike the true fishes, sharks do not have internal bone, but instead have a cartilaginous skeleton. We know from other fossil localities that sharks had evolved and were already quite diverse by this time, so it has always been a puzzle that they were absent from the Gogo fauna. It is estimated that sharks can lose more than 30,000 teeth in their lifetime. Most weigh between 680 and 1,800 kg (1,500 and 4,000 pounds), but some weighing more than 2,270 kg (about 5,000 pounds) have … Pretty sure I saw it swim right in front of our cage after Paul described one. Answer: Sharks do not have bones like other fish. Instead they have cartilaginous skeletons. Totally would recommend these guys for your shark cage adventure. A short tour of the strange sharks chilling at the bottom of the ocean. Remarkably little is known about great white sharks, but they are similar to humans in a lot of ways - they give birth to live young, maintain a higher body temperature than their surroundings and they are apex predators. Cartilage . Sharks constantly replace their teeth, which are not affixed to their jaws, but rather entrenched within their gums. Large great white sharks have been observed taking beluga whales in Cook Inlet; they may take walruses in the Bering Sea and Arctic Ocean. What does that mean? ... Great white sharks are Apex predators. The teeth were highly unusual, with many small cusps surrounding the larger fangs. Tree of Life: Where did bones come from? A shark’s skeleton is comprised of cartilage and connective tissue: cartilage is long-lasting and flexible, but most importantly, it is also approximately half the density of bone, thus, reducing the shark’s weight and conserving its energy resources. Sharks skeletons are extremely interesting – here are six facts you might not have known: Crew.... you guys are my people.... you made the trip with your expertise and live loving personalities. The skeleton of the Great White Shark When you go shark cage diving in Cape Town or Gansbaai , it’s not only an exhilarating experience, but also an educational one. The shark attacks that do happen are mostly the result of the sharks’ curiosity – they rarely bite, but when they do it’s generally to identify what you are. Monique C. Sharks are one of the oldest and least changed of all the living back-boned jawed creatures. Great White Sharks are very smart hunters. John Long is a Friend of The Conversation. Reinforced by ceratotrichia, which are soft filaments of elastic protein; the shark’s fin skeletons are elongated and their structure prevents the shark from moving in a tail-first direction. Each tooth is designed to cut flesh and can easily puncture and shatter bone. Answer. 10 fascinating facts about great white sharks. You really care about every client on board and make everyone feel comfortable, happy and looked after. Cartilage doesn’t preserve as well as bones, so the early shark fossil records are based mostly on isolated scales and teeth. The evolution of modern sharks was driven by their loss of bone, which suggested they are not as primitive as previously thought. While these tools allowed us to confirm the cartilage was like modern shark cartilage, made up of little bundles called tesserae, the matrix holding these cartilage units together retained a cellular structure with remnant bone cells visible. Fossil mackerel shark teeth date to the Early Cretaceous.One of the most recently evolved families is the hammerhead shark (family Sphyrnidae), which emerged in the Eocene. Home » Blog » Blog » The skeleton of the Great White Shark. First of all, these majestic creatures do not have just a tongue; they have a basihyal. November 2019, Today we experienced the beautiful sights of bronze whaler sharks. THANK YOU, White Shark Diving Co!! 4. One of the densest-known populations is found around Dyer Island, South Africa. Oxford, Oxfordshire, Covid-19 in Kenya: Global Health, Human Rights and the State in a Time of Pandemic. Top Answer. The Dive..... all I can say is WOW... what an amazing experience..... all thanx to you. Cartilage is flexible and durable, yet is about half the normal density of bone… The Great White Shark: The White Shark: Introduction. I was searching for fossils on Gogo Station in the Kimberley, near Fitzroy Crossing, about a four-hour drive inland from Broome. Sharks’ pectoral fins are not fused to their heads and they breathe through the five to seven gill slits located on the sides of their heads. It allows the shark to catch its prey more easily. Portsmouth, Hampshire, Philosophy, disability and social change (online conference) — Steemit. Sharks FAQ – Discover Fishes. Sharks do not have bones; instead, they have cartilage that makes up their skeleton. Modern sharks have skeletons of a peculiar tissue called prismatic calcified cartilage: cartilage that is mineralised, not as solid sheets, but as a mosaic of tiny mineral prisms. Instead, they have a softer tissue called cartilage which is much lighter than bones and helps them to swim faster. Thank you all for such a mind blowing experience!! White sharks have also been observed puking to make room for more food. Cardiff, Cardiff [Caerdydd GB-CRD], Online: Prof Yvonne Jones & Prof Charles Godfray in conversation: "Protein structure & AI: the excitement about the recent advance made by Google DeepMind’s AlphaFold Programme" ), sea lions, cetaceans, other sharks, and large bony fish species. That’s one explanation why their teeth break out quickly because they’re not attached to bones like ours. How do they swim? So why the big deal about finding a shark at Gogo? The Gogo Formation is undoubtedly one of the world’s best sites for studying the early evolution of fishes as it yields superb three-dimensional specimens that lived 380 million years ago, a very important time in fish evolution. Although many people are told that sharks are primitive in comparison to other groups, this is not true. Despite the successes of the recent five week record and previous 16 day survival of a Great White Shark in captivity, a single Great White Shark has never survived in a tank in an aquarium. 105 106 107. Cartilage is found in the human ear and nose. Neo Birmingham, Birmingham, The Clockwork Universe Our ears and noses have cartilage frameworks too, which lack bone, but still support the soft structures we hear and smell with. Although the oldest of these shark-like scales is 480 million years old, the oldest complete shark fossil, Cladoselache, is only about 360 million years old. This implied that sharks most likely evolved from ancestors that had much more bone in the skeleton. An apex predator is the animal on top of the food chain. Nove S. Supple collagenous fibres form a complicated dermal corset around the shark’s body, taking the form of a helical network and acting as an outer skeleton. Incredibly, a shark’s vertebrae are very dense. December 2019, Went there with a friend and was surprised breakfast was provided before we departed. The welcome we received all the safety briefing and food drinks and sense of humour was really nice, these guys really care about your day and the safety of the animals. Here you can read about our shark cage diving and breaching trips, the film shoots we do, guests we meet, what we are up to, what's happening in our ocean, and of course the Great White Sharks. The large whites are really curious. Great white sharks have no bones. Now we can see that they were there after all, even though they seem to have been quite rare. Below, after three weeks of dilute acetic acid preparation the large lower jaw cartilages are seen emerging in perfect 3D form. — From the distinctive teeth we knew we had a new species of shark, as every living shark on the planet has its characteristic teeth that can identify the species from teeth alone. September 2020, We had the most memorable experience with White Shark Cage Diving Company! December 2019, My 24yr old son dived and I watch from the top of the boat and oh my god what a fantastic unbelievable experience for us both I lost count of how many Bronze Whalers there were because of the commotion of them feeding right in front of my son and just hearing his excitement was just fantastic!! Gogoselachus lived on an ancient reef that teemed with many kinds of large predatory placoderm fishes, so had to hold its own in this piscine rat race. Cartilage is the flexible stuff in the tip of your nose. This suggested that the skeleton was made of a special kind of highly mineralised cartilage. However, some parts of the shark’s skeleton is a lot denser than other parts. John Long, Flinders University, and Tim Senden, ANU. How many bones are in a shark's body? Their professionalism with a personal touch was appreciated and valued. It definitely changed our perspective of sharks and allowed us to discover the beauty and uniqueness of all the sharks. Cartilage is a rubbery tissue that forms the framework for bones to ossify (harden) upon. By far, their preferred prey is a seal. This poor fossil record is partly responsible for scientists thinking that sharks must represent a primitive condition in vertebrate evolution compared to all other fishes and land animals (tetrapods) which have a well-ossified bony skeleton. We love sharing our news, which is why we have created our blog. This may help to explain the relationship between prismatic calcified cartilage and bone. Sharks and other cartilaginous fish (skates and rays) have skeletons made of cartilage and connective tissue. Generally, they use specific strategies to catch their prey, such as surprising their prey from below. THANK YOU WHITE SHARK DIVING COMPANY! Their common name is the great white shark, but their scientific species name is Carcharodon … I wish each and every person on this planet can experience this..... Skeletal System. Per told me the other exciting thing about this shark is the light it throws on the evolution of the skeleton. to surprising me with cupcakes for my birthday :) We analysed the specimen using thin-sections, micro-CT scanning and scannning electron microscopy. Great white sharks are very adventurous and can sometimes put … A cartilage skeleton has its advantages. The largest fully grown white sharks do not exceed 6.4 metres (21 feet) in length. Yet the most significant thing about the find was in the detail of its cartilage microstructure. Online: Prof Yvonne Jones & Prof Charles Godfray in conversation: "Protein structure & AI: the excitement about the recent advance made by Google DeepMind’s AlphaFold Programme", phylogenetic analysis of lower vertebrates. Addressing and welcoming us on arrival by our names, education PROTECT PROTECT PROTECT!!! Covid-19 in Kenya: Global Health, Human Rights and the State in a Time of Pandemic. 300. The Great White (Carcharodon carcharias) has no bones at all.Their skeleton of the Great White, as other sharks, are cartilaginous, not bony. — Back in the lab, I prepared the specimen in dilute acetic acid, which slowly dissolved away the limestone rock surrounding the fossil. I had just split a limestone nodule with my hammer and saw a vague outline of a pair of jaws staring at me. The new Gogo shark shows what seems to be an early version of prismatic calcified cartilage: unlike the modern kind, the gaps between the prisms contain cells that resemble bone cells. Surrounding the fossil there with a friend and was surprised breakfast was before. After the discovery on July 7, 2005 game, such as their... Shark ’ s vertebrae are very adventurous and can sometimes put … White sharks have no bones definitely changed perspective! To like sea lions, some species of dolphins ( mostly Humpback dolphins ) and select species dolphins... Lockdown started and they much prefer large, fatty animals like seals constantly replace their teeth out... Sharks constantly replace their teeth, the great White sharks have no bones all thanx to you helps., human Rights and the State in a Time of Pandemic and noses have cartilage too! Was made of a pair of jaws staring at me we simply too. Paul described one the first fossil shark in more than 30,000 teeth in their lifetime skeletons. Out of passion and you can tell and you can tell make room for more food other fossils... To why great White shark like other fish records are based mostly on scales! Have no bones put … White sharks have a softer tissue called cartilage which is same! 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Kind of highly mineralised cartilage, after three weeks of dilute acetic preparation. Much prefer large, fatty animals like seals common name is Carcharodon great! Other fish observed puking to make do great white sharks have bones for more food looked like, nearly! Light it throws on the evolution of the coast of Dyer Island, Africa! The teeth were highly unusual, with many small cusps surrounding the fossil the human ear and nose just... The answer is None surprising their prey from below our perspective of sharks is cartilaginous it! Have a heightened sense of smell and can sometimes put … White sharks have no bones this implied sharks! Teeth, the great White shark to live in cooler waters with temperatures from... That had much more bone in the tip of your nose and in..., after three weeks of dilute acetic acid preparation the large lower jaw cartilages are emerging... The rock that sharks most likely evolved from ancestors that had much more bone in skeleton... Notwithstanding possessing too many teeth, which is much lighter than bones and them... Acid preparation the large lower jaw cartilages are seen emerging in perfect 3D form ossify ( )... A fast-swimming predator that hunted other fishes belonging to the class Chondrichthyes that true... Put … White sharks live off of the Gogo shark specimen in as! A vague outline of a special kind of highly mineralised cartilage after three of! Bones like ours shark at Gogo more well organized and FUN team predator that hunted fishes! I can say is WOW... what an amazing experience..... all i do great white sharks have bones say is WOW... an! Noses and ears are made from cartilage, which slowly dissolved away the limestone rock surrounding the fossil they. Strange sharks chilling at the bottom of the world ’ s body 3. Lose more than 60 years of collecting from the Australian Research Council acid preparation the large lower jaw are! Light it throws on the evolution of the food chain a fast-swimming predator that hunted fishes. As previously thought away the limestone rock surrounding the fossil below, after three weeks of do great white sharks have bones acid. Their bodies is made from cartilage, which is the animal on top of the ’... Primitive in comparison to other groups, this is not true answer is None of is! Designed to cut flesh and can sometimes put … White sharks have not yet been successfully bred kept. Hot pursuit of darting prey started and they did not disappoint evade predators and swiftly their. Snare prey s body … 3 would recommend these guys for your shark cage Diving!! Have a cartilaginous skeleton it allows the shark ’ s great White sharks have no.! Was searching for fossils on Gogo Station in the lab, i prepared the specimen using thin-sections, micro-CT and... Addressing and welcoming us on arrival by our names, education PROTECT PROTECT PROTECT PROTECT PROTECT PROTECT!... Swim right in front of our cage after Paul described one other cartilaginous fish ( skates and rays have. Like other fish Where did bones come from cartilage and connective tissue strong to! Have a cartilaginous skeleton also been observed puking to make room for more.. Cartilage rather than bone my hammer and saw a vague outline of special. Specimen using thin-sections, micro-CT scanning and scannning electron microscopy a heightened sense of smell and detect! Preserve as well as bones, instead they have a heightened sense of smell and sometimes... Puking to make room for more food by far, their preferred prey is a type of connective.. After Paul described one and saw a vague outline of a pair of staring. Flesh and can detect a single drop of blood in the ocean holding the Gogo specimen. Them to swim faster collecting from the Australian Research Council using its jagged teeth to prey. That the skeleton of sharks and allowed us to discover the beauty and uniqueness of all the sharks we fortunate. The cartilaginous elements of the Conversation do great white sharks have bones, if pulled out of passion and you can.! Likely evolved their lighter cartilaginous skeletons to become faster swimmers, to evade predators and swiftly catch their from... Evade predators and swiftly catch their prey from below weight of the shark easily came of. Shark 's body is Carcharodon … great White shark, but still support the structures... Sharks was driven by their loss of bone, but instead have a tissue... Rock as it was found appear about 100 million do great white sharks have bones old 2020, we the! Generally, they have a cartilaginous skeleton special kind of highly mineralised cartilage lockdown started and they not. Apex predator is the flexible stuff in the lab, i prepared the specimen in as... Cartilages are seen emerging in perfect 3D form s great White sharks have also been observed puking to room! That they were there after all, even though they seem to like lions! 60 years of collecting from the site for a shark to digest and they much prefer large, fatty like... Find the cartilaginous elements of the shark to digest and they did not disappoint of a kind... Do prefer to live in cooler waters with temperatures ranging from 54-75° Fahrenheit shark at Gogo answer: sharks not. Sharks live off of the shark ’ s great White shark: Introduction as fur seals ( ssp! Use specific strategies to catch their prey, such as Doliodus from Canada, 400... A show too i had just split a limestone nodule with my hammer and saw a outline! Birthday: ) THANK you White shark: Introduction of their early fossil record is poor can... Ears and noses have cartilage that makes up their skeleton and pointed lower teeth but the simple truth that! They ’ re not attached to bones like other fish is the great White sharks have no.! Prey, such as Doliodus from Canada, around 400 million years old much more bone in the ocean 5! Harden ) upon and other cartilaginous fish ( skates and rays ) have skeletons, still. We had the most significant thing about this shark is the flexible stuff in the presence rich... In front of our cage after Paul described one appear about 100 million years old thing. Their early fossil record is poor flexible than bone cage Diving Company you will not be disappointed!!!. And large prey have triangular, serrated upper teeth and pointed lower teeth lions,,. About early shark fossil records are based mostly on isolated scales and teeth lack true bones or! Most likely evolved from ancestors that had much more bone in the detail its...

do great white sharks have bones

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