I have often wondered why the Megalodon Shark would have went extinct (if it is).
Some theories suggest that climate change was to blame or maybe competition for food, but I'm really not sure how the whole "ice age" concept fits in with the Biblical creation model, and it seems to me that the prey items of this 60 foot long beast are still around today (whales). Perhaps the flood of Noah's day created massive changes in ocean temperatures and salinity, which did not impact the whales but killed other fish like the mighty Megalodon. Food for thought...