10 Facts About Great White Sharks

10 Facts About Great White Sharks


Here are some facts about great white sharks:
white sharks are live-birthed, usually in litters of between four and seven individuals.
Now they’re called pups, but when they’re born they’re between 1.2 and 1.5 meters! So
that’s a pretty big baby. It takes a great white shark about ten to
twelve years to reach maturity at which point the females are actually about a meter longer
than the males – the largest recorded being over six meters – roughly the size of this
red boat behind me. At this length they’d weigh about two to three
thousand kilograms. Oh man! Now there are stories of some great whites
being over seven meters but those are unsubstantiated. White sharks are warm bodied. They’re not
warm-blooded like us – they can’t maintain a perfectly stable temperature, but their
internal organs are kept at up to thirteen degrees above the average temperature of the
ambient water around them. The heat generated by their muscles is actually transferred to
the blood in their veins as it returns from the shark’s extremities, so it warms it up
and keeps the core temperature a little bit hotter. This allows the shark to venture into
colder waters and also to have explosive power. Its muscles work a lot better when warm than
when cold, just like ours. The tradeoff is the shark requires about ten times as much
energy as if it didn’t heat its body and that’s why they need to feed on these blubber-rich
seals and whale carcasses. White sharks like to hunt when it’s light
out because they use their eyesight to spot their prey. But when they open their jaws,
their eyes actually roll back into their head to protect them and so they’re actually blind
when they’re taking a bite. Now they do like conditions that are a little low visibility
because they rely on stealth to track down their prey. If a seal spots them coming, it’s
basically game over because the seal is so much more maneuverable and it can definitely
get away from the shark. But they only eat sea mammals after they’re about 2.5 meters
long, which is why most of the sharks we’re seeing around here are quite large. Before
that, they’re diet consists mainly of fish. The gestation period is thought to be about
eighteen months and that leads to a two to three year reproduction cycle and with such
small litters that means it takes a long time for this shark population to recover. There
are a couple misconceptions about great white sharks. One is that they can’t get cancer
and that’s led to a lot of people hunting them down and trying to use their fins as
an anti-cancer soup. But in reality sharks get cancer just like anything else and there
is photographic evidence of sharks with big tumors so it makes no sense to hunt down sharks
as a cancer remedy because they get cancer just like we do.
Another misconception is sharks are coastal creatures that just cruise the beaches waiting
to bite people. In reality the sharks spend much of their time way, way out at sea and
very deep, over a kilometer deep. It’s kind of shocking but we’ve only found this out
in the last couple of years so there is so much about sharks that remains undiscovered.
We don’t know where they go or what they do for most of the time that they’re alive. That’s
why research projects like this are so important to find out more about the shark and figure
out how we can help it rehabilitate and become the predator of the sea that it once was.

99 thoughts on “10 Facts About Great White Sharks

  1. Wow, I never knew their eyes rolled back into their head when they open their jaws. That's insane.
    O YA, HAPPY SHARK WEEK EVREBODEH!!!!!!!!!!!!1!!!

  2. Where is the "10x amount of food as other sharks" statistic come from? The only data I have been able to scrounge up for white pointer metabolism is Carey et al. 1982. Their analysis was extremely sloppy and, as the authors admit, was likely to overestimate the metabolism of their target shark (an estimated 934 kg, 4.57 meter individual). Their results indicated that even 30 kg of blubber (say from a good sized seal) would have been enough to sustain the animal for 1.5 months. In fact the authors lauded the shark's abilities to keep a body above ambient without wasting energy like a mammal and bird does. Reference: Carey, F.G., Kanwisher, J.W., Brazier, O., Gabrielson, G., Casey, J.G., Pratt Jr., H.L. 1982. Temperature and Activities of a White Shark, Carcharodon carcharias. Copeia. No. 2. 254–260.

  3. Hi I just found your channel a few dayz ago, and just wanted you to know I really enjoy it.  Please keep up the good work.  Carrie on…  ;O)

  4. In addition to Veritasium's point on why sharks shouldn't be hunted so much; sharks are keystone species of many marine ecosystems because they prevent competitive exclusion between their prey species, who fight over the same resources until one is or nearly is extinct, by keeping them in check. Essentially, by preventing competitive exclusion, sharks stimulate more balance of food chain energy transfers through allowing greater diversity. In other words, if people didn't overhunt sharks, sharks would be allowed to regulate the populations of all the other lower trophic level species of the food chain better. No one can replace shark biological roles better than sharks because they're immersed their entire lives. Nature controls homeostasis, not the money-driven overhunting fisheries' maximal sustainable yield mumbo jumbo. And by maintaining marine ecosystems' diversity, we'd also allow the biological magnification of toxins, like mercury, to taper at a steadier rate rather than a slow rate with less diversity. There's no downside to limiting the act of overhunting.

  5. "We don't know where they go or what they do for their entire lives"

    My creepometer is EXPLODING!!!

  6. misunderstood animals, i hate seeing everyone thinking it is a cruel and sadic animal when it only bites people by error

  7. My grandma used to say; it takes a great white shark to know a great white shark.
    She doesn't anymore, now she's taking her meds.

  8. i almost skipped over this video because the tittle, the "# $things about $things" titles usually indicates a crap click bait channel.

  9. Hey Veritasium.
    I found your channel today after it was recommended today by several friends of mine. I binged watched your "new here try these vids" up until here and I love how you communicate science. However I would consider this video a black spot on your vest. Why? Because you're with a shark tour, in (what appears to me) relative proximity to the coast. Where you say sharks don't live. Where they shouldn't live. Where People live and bathe. And you're on a Shark/Tourism trip, where Sharks get fed. While in Proximity to People. To ships. To swimmers/Divers (even if in a cage). I haven't seen one yet, but I'm pretty sure you've got a vid about Pavlov?
    Australia is infamous with shark fans about shark attacks, shark hunts and shark feeding, and all of this ties together for some part.
    For those uninformed: Feeding sharks attracts more sharks. It teaches them that People=Food (not are, but get associated with). So they will search out people. They will stay closer to the coast. This is a problem. And with this video, you are further propagating this behaviour and also maybe spreading the will to do something similar with other people. For a channel of this format and a person of your intelligence, I am deeply disappointed by this.

  10. Some interesting facts there. We have a few bronze whalers around Ulladulla, I see them from time to time while I am diving and am fairly ok with them…. A great white would probably see me levitating out of the water.

  11. Actually its a protective eyelid that goes over its eye to protect it its eyes doesn't roll back into its head

  12. It's such an amazing creature that is so beautiful. Sharks will live forever, even when every animal dies. It will come back… It always does.

  13. Me and my friend were just playing a game and she said search up facts about sharks and this was really helpful! Lol🐬🐳🐋🐠🐟🐡

  14. "so we can help the shark become the predator it once was. . ." step into veritasiums dojo mr. shark. . .stop trying to bite me, and bite me!

  15. I recall a factual documentary on the whole cancer/shark thing. It wasn't really about sharks not getting cancer, it was about not getting bone cancer….because they have no bones. So shark cartilage was the big mystery, why doesn't this stuff get attacked by cancer? I believe the Chinese have been eating shark-fin soup for longer than we've known about cancer so that point is moot. Shark cartilage was then harvested and crushed into powder that people thought would stop them getting cancer. As for big tumours, if you're just looking at this tumour on film and assuming cancer this is incorrect, the tumour might not be cancerous. This documentary was in the early 90's and then they stated that nobody knows how long sharks live for. I came here to see if that were still the case because I know they have been tracked so what gives? Do we know how long they live yet or what?

  16. I fear sharks above all else my one and only fear its my mortal fear and if u say sharks only go in deep water then explain the attacks basicly flooding in all over the world claiming to be by them?

  17. The first fact to know is that it's real name is Mediocre Caucasian Shark thank you very much LOL

    JK!

  18. +Veritasium+ Here are a few other fascinating facts about Great White Sharks (you can look these up online too):

    1. They have a total of 82 chromosomes per body-cell (therefore 41 karyotypes per body-cell).
    2. They have a bite force of up to 17,790 newtons.
    3. Great white sharks can survive 6 weeks without food.

  19. Number 12 we cut off there fins and throw them back in the water alive so we are far worse Number 13 you are 6 times more likely to be killed by a lighting than a shark

  20. its not sharks fault that they kill humans there colour blind so they thank your a seal so don't kill sharks

  21. Ok can someone tell me why some marine biologist do a free diving with sharks with a cage and some do not ?!??!

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