"It's over! I'm doomed! See you in the next life!","They're here!" the third voice cried out, tinged with panic.,It's truly terrifying. It looks like a heartless predator with no emotions. And the sheer number of them, swarming together in large groups, it's almost unbelievable that they are carnivores. What on earth could have driven their evolution to develop such thick, bullet-proof shells。