Evolutionists. Are sharks evidence of evolution?

Some scientists claim sharks have been around for 65 million years...with no discernible change.

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  • God
    Lv 5
    hace 7 meses

    If what you claim is true, then yes. That would mean a shark is a living fossil as biologists call creatures who haven't evolved much due to lack of environmental pressure. But judging by your question, you really don't understand anything about biology. 

  • Anónimo
    hace 7 meses

    So what do you want, a cookie?

  • Anónimo
    hace 7 meses

    Why does the world's most perfect aquatic predator need further adaptations?

  • hace 7 meses

    Actually, there's been considerable discernible change. Carcharocles megalodon, for instance, is known to have lived from 23 million years ago to about 2.3 million years ago, and while it bore considerable resemblance to the modern great white shark, it was about three times the size. 

     

    (I'm familiar with that particular example because of an SF/horror story written some time back in which C. megalodon turns out NOT to be extinct. l believe there's been a movie treatment of the concept more recently.)

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  • hace 7 meses

    When a species is perfectly adapted to its environment, there's no pressure to evolve. Do you seriously think evolution means change just for the sake of change, with no natural selection involved?

  • hace 7 meses

    Evolution does not mean that all species change over time. 

    Sharks are a good example of a very slow change if there is any at all. They're an apex predator, that doesn't improve with every change, and some of the evolutionary changes are dead ends.

    A better example of minimal change would be the cockroach -- it's perfectly adapted to survive...

  • hace 7 meses

    I do wonder, and so I ask:

    How many Origin Stories from other cultures does anybody even LOOK at, before declaring that the ancient Hebrew story is the Least Silly of them all?

  • Anónimo
    hace 7 meses

    Please read the link below.

  • Paul
    Lv 7
    hace 7 meses

    The sharks of today are quite similar to the sharks of millions of years ago (not identical) because their habitat has remained quite constant over time, exactly how biological evolution works. But the habitats of mammals have changed drastically in that period of time, so for mammals it was either evolve or go extinct.

    born again Christian biologist

  • hace 7 meses

    There are many species of sharks some are still around and some are extinct.

    Sharks as a group have been around for 65 million years or more but as individual species, species come and go over time.

    It is like saying Reptiles have been around for hundreds of millions of years 

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