Prehistoric Sharks

[Spalea]

@Apex Titan :

Well, @GuateGojira has magistrally answered in my place. What could I add ? I didn't want to make you angry or to cast doubt systematically what you tell. I only ask a few questions, always the same... You say that the biggest megalodon specialists think as you do. Perhaps yes, but I don't care of their assertions and stay with my doubts.
Of course this video seems to be ridiculous in your opinion. It isn't a scientific video of course, it has no one scientific value, but I find it good made. With little means, we just feel sperm whale's and shark's skins. Very realistic, I have even a deeper appreciation as concerns these videos about dinosaurs and terrestrial animals. But that 's an other subject.
About megalodons I always only stated on this: they were cartilaginous fishs. So in other words, no one possible fossilization of the bones, except the teeth. And about teeth what can we do ? To compare them with the actual tiger and white shark's teeth. And to make or estimate a volume ratio. And from that, estimating the megalodon's weight. Simple isn't it ? No because we don't stop reading some extrapolations, some always growing extrapolations could I say. I just say it changes everything according to whether the meg weighed 20 or 65 tons (your last estimation). In the first case, the megalodon had to sustain a competition with other huge predators, in the second case it completely destroyd the concurrency. You're seemingly adopting this last hypothesis, adult megalodon was invincible. And not an indolent shark as you told in a previous thread. OK ! How, in this case, this specy could have been roaming so much time, 20 millions years, inside oceans ? I only see one possible explanation: megalodons were extraordinary scarce. An invincible predator systematically killing big preys and other big predators cannot have a geological duration of life (look upon us ! We are quickly going towards our extinction with our actual bullshit) except because of its extrem scarcity.
So, what was the limitating factor of its population ? Extremely low rate of reproduction ? Perhaps... A worm is in the fruit. Reply